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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-2(4x+3)-42=0

We multiply parentheses

-8x-6-42=0

We add all the numbers together, and all the variables

-8x-48=0

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

-8x=48

x=48/-8

x=-6

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