x/6 +3 =7
x/2=8
8x-11=2x+1
2006-10-01 14:08:35 · 7 answers · asked by Felton T 1 in Education & Reference ➔ Homework Help
You need to isolate the variable - the X
Do the Order of Operations backwards.... add and subtract the number that is not "attached" by multiplication or division to the variable....
x/6 + 3 = 7
Subtract the 3 from both sides
x/6 + 3 (-3) = 7 (-3)
x/6 = 4
Multiply both sides by 6 (because that is the denominator of a fraction - below the variable)
x = 24
Hope this helps!
Good luck with the next 2!!!
2006-10-01 14:14:34 · answer #1 · answered by Glory 5 · 0⤊ 0⤋
1) x / 6 +3 =7
-3 -3
x / 6 = 4
6 *(x/6)= 4 *6
x = 24
2) x/ 2 =8
2*(x/2) = 8*2
x = 16
3) 8x - 11 = 2x + 1
-2x -2x
6x - 11 = 1
+11 +11
6x = 12
6x /6 = 12/6
x = 2
2006-10-01 14:18:20 · answer #2 · answered by Cathy J 1 · 0⤊ 0⤋
You need to do the opposite operation on both sides to undo the operations.
For the first subtract 3 from both sides and then multiply by 6 on both sides.
For the second multiply by 2 on both sides.
For the third subtract 2x on both sides, add 11 on both sides, and divide by 6 on both sides.
Good luck!
2006-10-01 14:18:47 · answer #3 · answered by just wants to know 7 · 0⤊ 0⤋
First two: multiply by lcd to clear fractions; solve for x.
Last one: get x's together with single numbers on other side. Divide by number in front of x (the coefficient). That will give you the value of x.
2006-10-01 14:12:27 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1.) 24
2.) 16
3.) get real dude i'm not doing ALL your homework for you...thats mental math by the way loser
2006-10-01 14:11:29 · answer #5 · answered by babybone1991 3 · 0⤊ 0⤋
1) x=24
2) x=16
3) x=2
Now, you should try to do it yourself. That's how you learn it.
2006-10-01 14:17:47 · answer #6 · answered by Ivan 5 · 0⤊ 0⤋
Okay... what do you need help with?
2006-10-01 14:10:49 · answer #7 · answered by Anonymous · 0⤊ 0⤋