X+7=-x-11

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Solution for X+7=-x-11 equation: 



X+7=-X-11

We move all terms to the left:

X+7-(-X-11)=0

We add all the numbers together, and all the variables

X-(-1X-11)+7=0

We get rid of parentheses

X+1X+11+7=0

We add all the numbers together, and all the variables

2X+18=0

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

2X=-18

X=-18/2

X=-9

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