18=-2(7-x)

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Solution for 18=-2(7-x) equation: 



18=-2(7-x)

We move all terms to the left:

18-(-2(7-x))=0

We add all the numbers together, and all the variables

-(-2(-1x+7))+18=0



We calculate terms in parentheses: -(-2(-1x+7)), so:

-2(-1x+7)

We multiply parentheses

2x-14

Back to the equation:

-(2x-14)



We get rid of parentheses

-2x+14+18=0

We add all the numbers together, and all the variables

-2x+32=0

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

-2x=-32

x=-32/-2

x=+16

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