-3x-x+7=-15

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



-3x-x+7=-15

We move all terms to the left:

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

We add all the numbers together, and all the variables

-4x+22=0

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

-4x=-22

x=-22/-4

x=5+1/2

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