-2(x+9)=-21

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Solution for -2(x+9)=-21 equation: 



-2(x+9)=-21

We move all terms to the left:

-2(x+9)-(-21)=0

We add all the numbers together, and all the variables

-2(x+9)+21=0

We multiply parentheses

-2x-18+21=0

We add all the numbers together, and all the variables

-2x+3=0

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

-2x=-3

x=-3/-2

x=1+1/2

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