3x+-1x+7=-15

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Solution for 3x+-1x+7=-15 equation: 



3x+-1x+7=-15

We move all terms to the left:

3x+-1x+7-(-15)=0

We add all the numbers together, and all the variables

2x+22=0

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

2x=-22

x=-22/2

x=-11

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