(4x+15)-(15-3x)=120-x

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Solution for (4x+15)-(15-3x)=120-x equation: 



(4x+15)-(15-3x)=120-x

We move all terms to the left:

(4x+15)-(15-3x)-(120-x)=0

We add all the numbers together, and all the variables

(4x+15)-(-3x+15)-(-1x+120)=0

We get rid of parentheses

4x+3x+1x+15-15-120=0

We add all the numbers together, and all the variables

8x-120=0

We move all terms containing x to the left, all other terms to the right

8x=120

x=120/8

x=15

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