-(x+3)=3(15+x)

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Solution for -(x+3)=3(15+x) equation: 



-(x+3)=3(15+x)

We move all terms to the left:

-(x+3)-(3(15+x))=0

We add all the numbers together, and all the variables

-(x+3)-(3(x+15))=0

We get rid of parentheses

-x-(3(x+15))-3=0



We calculate terms in parentheses: -(3(x+15)), so:

3(x+15)

We multiply parentheses

3x+45

Back to the equation:

-(3x+45)



We add all the numbers together, and all the variables

-1x-(3x+45)-3=0

We get rid of parentheses

-1x-3x-45-3=0

We add all the numbers together, and all the variables

-4x-48=0

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

-4x=48

x=48/-4

x=-12

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