-10=-2(9+x)

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Solution for -10=-2(9+x) equation: 



-10=-2(9+x)

We move all terms to the left:

-10-(-2(9+x))=0

We add all the numbers together, and all the variables

-(-2(x+9))-10=0



We calculate terms in parentheses: -(-2(x+9)), so:

-2(x+9)

We multiply parentheses

-2x-18

Back to the equation:

-(-2x-18)



We get rid of parentheses

2x+18-10=0

We add all the numbers together, and all the variables

2x+8=0

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

2x=-8

x=-8/2

x=-4

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