15-x+4x=x+87

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Solution for 15-x+4x=x+87 equation: 



15-x+4x=x+87

We move all terms to the left:

15-x+4x-(x+87)=0

We add all the numbers together, and all the variables

3x-(x+87)+15=0

We get rid of parentheses

3x-x-87+15=0

We add all the numbers together, and all the variables

2x-72=0

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

2x=72

x=72/2

x=36

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