15+2x=-x+3

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Solution for 15+2x=-x+3 equation: 



15+2x=-x+3

We move all terms to the left:

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

We add all the numbers together, and all the variables

2x-(-1x+3)+15=0

We get rid of parentheses

2x+1x-3+15=0

We add all the numbers together, and all the variables

3x+12=0

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

3x=-12

x=-12/3

x=-4

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