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

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



(X+7)=-3(X+7)

We move all terms to the left:

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

We get rid of parentheses

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



We calculate terms in parentheses: -(-3(X+7)), so:

-3(X+7)

We multiply parentheses

-3X-21

Back to the equation:

-(-3X-21)



We get rid of parentheses

X+3X+21+7=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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