-7(-2x+1)=21

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Solution for -7(-2x+1)=21 equation: 



-7(-2x+1)=21

We move all terms to the left:

-7(-2x+1)-(21)=0

We multiply parentheses

14x-7-21=0

We add all the numbers together, and all the variables

14x-28=0

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

14x=28

x=28/14

x=2

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