X+7+x=-20

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Solution for X+7+x=-20 equation: 



X+7+X=-20

We move all terms to the left:

X+7+X-(-20)=0

We add all the numbers together, and all the variables

2X+27=0

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

2X=-27

X=-27/2

X=-13+1/2

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