-3(3x-7)=-21-2x

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Solution for -3(3x-7)=-21-2x equation: 



-3(3x-7)=-21-2x

We move all terms to the left:

-3(3x-7)-(-21-2x)=0

We add all the numbers together, and all the variables

-3(3x-7)-(-2x-21)=0

We multiply parentheses

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

We get rid of parentheses

-9x+2x+21+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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