3(x+7)=-(x-1)

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Solution for 3(x+7)=-(x-1) equation: 



3(x+7)=-(x-1)

We move all terms to the left:

3(x+7)-(-(x-1))=0

We multiply parentheses

3x-(-(x-1))+21=0



We calculate terms in parentheses: -(-(x-1)), so:

-(x-1)

We get rid of parentheses

-x+1

We add all the numbers together, and all the variables

-1x+1

Back to the equation:

-(-1x+1)



We get rid of parentheses

3x+1x-1+21=0

We add all the numbers together, and all the variables

4x+20=0

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

4x=-20

x=-20/4

x=-5

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