-x-3-8=7

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Solution for -x-3-8=7 equation: 



-x-3-8=7

We move all terms to the left:

-x-3-8-(7)=0

We add all the numbers together, and all the variables

-1x-18=0

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

-x=18

x=18/-1

x=-18

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