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i need help you have to solve for the letters but i don't know the anwsers.i also need help on5-9/2d=32 & 4(2y+9)=3y-14 &4(2y+9)=3y-14 &2.5-(-8.2)=26.7 & 11-2(3m-10)=5(4-m) thanks a lot if you help i an stuck and i need anwsers but don't know how

2007-01-19 14:03:14 · 7 answers · asked by bob 2 in Education & Reference Homework Help

7 answers

N= -14
A= 54
Y= -15
M= 23/24
x= 7 3/4 or x= 31/4
Q= 4
D= 31 1/2 or 63/2
Y= -10
I think the next one is a typo, no letter to solve for.
M= -29
~~~~~~~~~~
How to on the first one...

-5+n+16=-3

the object is to get the letter by itself. to do this, you need to get the -5 and the 16 on the sae side as the -3. What you do on one side of the '=' sign, you MUST do the SAME thing to the other side. to get rid of the -5 on the left of the '='. you must add 5,

-5+n+16= -3
+5 = +5
____________
n+16 = 2

with me so far? good.

now, to get rid of the 16 on the left side, you must subtract 16.

n+16 = 2
-16 = -16
___________
n = -14

behold your answer.

~~~~~~~~~~~~~~~~~~~

on the second one... last one, only to explain multiplication and division.

11+a/6= 20

lets start with the easy one, the 11.

11+a/6 = 20
-11 = -11
__________
a/6 = 9


now, to undo multiplication, you must... divide. to undo division you must... multiply. now for the a/6. Remember, your objective is to get the a by itslf.

a/6 = 9
*6 = *6
___________
a = 54


the six on the bottom and the multiplying of the six cancel, and 9 *(times) 6 is 54.


confused yet?

If you need the how-to on all of that, e-mail me and I can explain it. Hope it helps!

2007-01-19 15:57:22 · answer #1 · answered by crazy_lil_nae_nae 1 · 0 0

-5+n+16=-3
n+11=-3 (add -5 and 16)
n=-14 (subtract 11)

11+a/6=20
a/6=9 (subtract 11)
a=54 (multiply by six on both sides)

-5/8+m=1/3
-15/24+m=8/24 (make same denominator)
m=27/24=9/8=1 1/8 (add 15/24 and then simplify)

7=-3/4x
-28/3=x (multiply by –4/3)

50=-2+13Q
52=13Q (add 2)
Q=4 (divide by 13)

5-9/2d=32
-9/2d=27 (subtract 5)
d=-6 (divide by –2/9)

4(2y+9)=3y-14
8y+36=3y-14 (distribute 4)
5y=-50 (subtract 3y and subtract 36)
y=-10 (divide by 5)

2.5[x]-(-8.2)=26.7 [i am going to assume a letter is there since there is none]
2.5x=18.5 (subtract 8.2)
x=7.4 (divide by 2.5)

11-2(3m-10)=5(4-m)
11-6m+20=20-5m (distribute 2 and distribute 5)
11=m (add 6m and subtract 20)

2007-01-19 15:51:54 · answer #2 · answered by musicalkoreangirl 3 · 0 0

-5 +n +16 = -3
n + 11 = -3 (take the 5 from the 16)
n = -14 (subtract 11 from both sides)

11 + a/6 = 20
a / 6 = 9 (subtract 11 from both sides)
a = 54 (multiply both sides by 6)

7y - 4(3y-5) = 80
7y - 12y + 20 = 80 (distribute the -4 onto the 3y-5)
-5y + 20 = 80 (combine the y's)
-5y = 60 (subtract 20 from both sides)
y = -12 (divide both sides by -5)

That should be enough to get you rolling for the rest of them.

2007-01-19 14:14:37 · answer #3 · answered by ZeroByte 5 · 2 0

i spend enough time in my college algebra class each week, so theres no way im answering that! sorry.

2007-01-19 14:06:06 · answer #4 · answered by Anonymous · 0 0

lmao do your own homework
im to lazy to figure it out anyway

2007-01-19 14:07:02 · answer #5 · answered by spiln 2 · 0 0

can we take this to the bank ?

2007-01-19 14:10:35 · answer #6 · answered by Anonymous · 0 1

Please tell me when and where in your lifetime will you ever use that?

2007-01-19 14:07:20 · answer #7 · answered by hotmama 3 · 1 0

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