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

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



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

We move all terms to the left:

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

We multiply parentheses

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



We calculate terms in parentheses: -(-(x+7)), so:

-(x+7)

We get rid of parentheses

-x-7

We add all the numbers together, and all the variables

-1x-7

Back to the equation:

-(-1x-7)



We get rid of parentheses

3x+1x+7+21=0

We add all the numbers together, and all the variables

4x+28=0

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

4x=-28

x=-28/4

x=-7

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