7(3-6x)=-21

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Solution for 7(3-6x)=-21 equation: 



7(3-6x)=-21

We move all terms to the left:

7(3-6x)-(-21)=0

We add all the numbers together, and all the variables

7(-6x+3)-(-21)=0

We add all the numbers together, and all the variables

7(-6x+3)+21=0

We multiply parentheses

-42x+21+21=0

We add all the numbers together, and all the variables

-42x+42=0

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

-42x=-42

x=-42/-42

x=1

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