-3x-7(3x-20)=-28

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Solution for -3x-7(3x-20)=-28 equation: 



-3x-7(3x-20)=-28

We move all terms to the left:

-3x-7(3x-20)-(-28)=0

We add all the numbers together, and all the variables

-3x-7(3x-20)+28=0

We multiply parentheses

-3x-21x+140+28=0

We add all the numbers together, and all the variables

-24x+168=0

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

-24x=-168

x=-168/-24

x=+7

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