7(3-3x)=-42

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Solution for 7(3-3x)=-42 equation: 



7(3-3x)=-42

We move all terms to the left:

7(3-3x)-(-42)=0

We add all the numbers together, and all the variables

7(-3x+3)-(-42)=0

We add all the numbers together, and all the variables

7(-3x+3)+42=0

We multiply parentheses

-21x+21+42=0

We add all the numbers together, and all the variables

-21x+63=0

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

-21x=-63

x=-63/-21

x=+3

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