3x+15=-5x+7x=4

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Solution for 3x+15=-5x+7x=4 equation: 



3x+15=-5x+7x=4

We move all terms to the left:

3x+15-(-5x+7x)=0

We add all the numbers together, and all the variables

3x-(+2x)+15=0

We get rid of parentheses

3x-2x+15=0

We add all the numbers together, and all the variables

x+15=0

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

x=-15

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