3-2(x-4)=21

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Solution for 3-2(x-4)=21 equation: 



3-2(x-4)=21

We move all terms to the left:

3-2(x-4)-(21)=0

We add all the numbers together, and all the variables

-2(x-4)-18=0

We multiply parentheses

-2x+8-18=0

We add all the numbers together, and all the variables

-2x-10=0

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

-2x=10

x=10/-2

x=-5

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