3(2x+7)=-42+21

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Solution for 3(2x+7)=-42+21 equation: 



3(2x+7)=-42+21

We move all terms to the left:

3(2x+7)-(-42+21)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

3(2x+7)+21=0

We multiply parentheses

6x+21+21=0

We add all the numbers together, and all the variables

6x+42=0

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

6x=-42

x=-42/6

x=-7

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