6/7s-3.4=4.5-1/7s+1/6
move all unknown numbers to left and known numbers to right and becomes
6/7s+1/7s=4.5+3.4+1/6
7/7s=7.9+1/6
7/7=1 & 1/6=0.16666 therefore
s=7.9+0.16666
s=8.06666...
2006-08-25 21:04:47
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answer #1
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answered by Rick 2
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6/7s -3.4 = 4.5 -1/7s +1/6
Not too Easy. I worked it out for you. Combine lowest demoninators when adding fractions. (Make the bottom numbers the same)
Combine like numbers.
6/7s+ 1/7s= 3.4 +4.5+1/6
Make numbers into fractions.
7/7s=3 and 4/10 + 4 and 5/10 + 1/6
7/7s= (30/10) + (4/10) + (40/10)+ (5/10) + (1/6)*10
7/7s= (30/10)*6 + (4/10)*6 + (40/10)*6+ (5/10)*6 + 10/60
7/7s= 180/60+24/60+240/60+30/60+10/60
s= 484/60
2006-08-25 21:16:17
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answer #2
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answered by mattymomostl 3
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in linear equations with a single variable ( like the one you asked ), you take all the terms with the variable ( here the variable is 's' ) on one side of the = sign and keep the rest of the constant terms on the other side of the = sign.
GIVEN EQUATION :
( 6/7 )s - 3.4 = 4.5 - ( 1/7 )s + ( 1/6 )
STEP 1:
take all terms with the 's' to one side
NOTE : when you take a term to the other side, you change its sign.
( 6/7 )s - 3.4 + ( 1/7 )s = 4.5 + ( 1/6 )
here we had a '-' sign before ( 1/7 )s when it was to the right.
so when we took it to the left of the '=' sign , we changed its sign to '+'.
STEP 2:
take the terms without the 's' ( constant terms ) to the other side of the '=' sign.
remember to change their signs.
( 6/7 )s + ( 1/7 )s = 4.5 + ( 1/6 ) + 3.4
STEP 3:
now just sum up both the sides.
I have assumed that 4.5 and 3.4 are decimals and not multipied numbers.
now, 1/7 + 6/7 = ( 6+1)/7 and 4.5 + 3.4 = 7.9
Our equation now becomes :
( ( 6+1 )/7 )s = 7.9 + ( 1/6 )
Now 1/6 = 0.1
our equation now becomes
( 7/7 )s = 7.9 + 0.1
Now, 7/7= 1 and 7.9 + 0.1 = 8.0 or simply 8
our equation has finally come to
1s = 8
1 multiplied by any number is the number itself.
So we can write '1s' as only 's'.
the solution is in front of us now :
s = 8
Hope this helps.
2006-08-25 21:15:42
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answer #3
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answered by candy_gsm 1
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the key is to make them all fractions with the same denomiator.
e.i. 4.5=4 1/2 = 9/2
3.4=3 2/5= 17/5
now find a common denominator (bottom #'s) and just add the numerators (top #'s).
good luck
2006-08-25 21:04:17
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answer #4
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answered by ? 2
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yes it is a linear equation.keep "s" terms on one side and other terms on other side.
6/7s+1/7s=+34/10+45/10+1/6
lcm of all
(30*6)s+30s=(21*34)+(21*45)+35
_________________________
210
180s+30s=714+945+35
= 210s=1694
s=1694/210
s=8.066
2006-08-25 20:58:30
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answer #5
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answered by Shaina 2
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Math used to torture me & they tell you that you will need it one day - and you never ever ever need all of those things that make you freak out and give you headaches - so stressful. Hope one of these sites helps you cause I certainly can't :o) I did use some of these when I was in calculus and that was hard and these sites helped so just search them for linear equations - some are linked to it already. Some can help solve problems or totally solve them - just try to understand it though - most of the time, teachers will give you points for trying even if the answer is wrong~ :o)
http://www.math.com/ try this site - it used to help me out :o)
http://www.math.com/homeworkhelp/algebra.html
http://tutorial.math.lamar.edu/AllBrowsers/1314/SolveLinearEqns.asp
http://www.helpalgebra.com/articles/linearequations.htm
http://www.purplemath.com/index.htm
****** this site is the one with the calculators that solve the problems and explain them *******
http://www.quickmath.com/
- just pick the type on the left side of your screen
2006-08-25 20:49:29
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answer #6
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answered by Anonymous
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i would look for a calucalator that can do fractions thats how i always did that but that is not a good thing but yeah i would ask your teacher for help i would just get after school help if you can get as much help as you can do not be embarrased to get help. getting help means passing or failing so i would get as much help as you can and see if you have a homework help like we do here we have one that comes on the tv and you can call in with your homework problems and its local teachers that help with your homework i would ask your teacher or your school if you have something like that and if not then stay after and get as much help there as you can so you can understand what you are doing cause i was embrased to get help and i wish i did not do that cause i am still bad at math and if i had gotten the help i would be better at math then i am now. sorry i couldnt help ya with the math problem.
2006-08-25 20:53:05
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answer #7
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answered by knowssignlanguage 6
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Candy_gsm, got it totally correct expect for some reason he/she made the mistake of writing 1/6 = 0.1, which is false, obviously. Apart from that it was a good answer and very well explained.
2006-08-26 01:36:59
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answer #8
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answered by Chris 3
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I'm terrible at math. But here is list of books from amazon.com about the subject.
http://www.amazon.com/s/ref=nb_ss_b/102-0371869-7740959?url=search-alias%3Dstripbooks&field-keywords=understanding+linear+equations
2006-08-25 20:49:12
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answer #9
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answered by Kitia_98 5
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The answer is s=15/121.
You consult lower standard math text books. Any Algebra text book for IX-X stds. will be helpful to you.
2006-08-25 20:58:14
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answer #10
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answered by cgen2 2
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