-7(x-9)=21

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Solution for -7(x-9)=21 equation: 



-7(x-9)=21

We move all terms to the left:

-7(x-9)-(21)=0

We multiply parentheses

-7x+63-21=0

We add all the numbers together, and all the variables

-7x+42=0

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

-7x=-42

x=-42/-7

x=+6

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