3(x-15)+9x=3x-(x+15)

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Solution for 3(x-15)+9x=3x-(x+15) equation: 



3(x-15)+9x=3x-(x+15)

We move all terms to the left:

3(x-15)+9x-(3x-(x+15))=0

We add all the numbers together, and all the variables

9x+3(x-15)-(3x-(x+15))=0

We multiply parentheses

9x+3x-(3x-(x+15))-45=0



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

3x-(x+15)

We get rid of parentheses

3x-x-15

We add all the numbers together, and all the variables

2x-15

Back to the equation:

-(2x-15)



We add all the numbers together, and all the variables

12x-(2x-15)-45=0

We get rid of parentheses

12x-2x+15-45=0

We add all the numbers together, and all the variables

10x-30=0

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

10x=30

x=30/10

x=3

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