2x-3+x=-15

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



2x-3+x=-15

We move all terms to the left:

2x-3+x-(-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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