-x-7=3(x+3)

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



-x-7=3(x+3)

We move all terms to the left:

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

We add all the numbers together, and all the variables

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



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

3(x+3)

We multiply parentheses

3x+9

Back to the equation:

-(3x+9)



We get rid of parentheses

-1x-3x-9-7=0

We add all the numbers together, and all the variables

-4x-16=0

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

-4x=16

x=16/-4

x=-4

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