-40=-10(12+x)

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Solution for -40=-10(12+x) equation: 



-40=-10(12+x)

We move all terms to the left:

-40-(-10(12+x))=0

We add all the numbers together, and all the variables

-(-10(x+12))-40=0



We calculate terms in parentheses: -(-10(x+12)), so:

-10(x+12)

We multiply parentheses

-10x-120

Back to the equation:

-(-10x-120)



We get rid of parentheses

10x+120-40=0

We add all the numbers together, and all the variables

10x+80=0

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

10x=-80

x=-80/10

x=-8

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