9-2(x-1)=-21

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Solution for 9-2(x-1)=-21 equation: 



9-2(x-1)=-21

We move all terms to the left:

9-2(x-1)-(-21)=0

We add all the numbers together, and all the variables

-2(x-1)+30=0

We multiply parentheses

-2x+2+30=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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