-9(2x+1)=21

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



-9(2x+1)=21

We move all terms to the left:

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

We multiply parentheses

-18x-9-21=0

We add all the numbers together, and all the variables

-18x-30=0

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

-18x=30

x=30/-18

x=-1+2/3

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