3(135-x)=x-15

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Solution for 3(135-x)=x-15 equation: 



3(135-x)=x-15

We move all terms to the left:

3(135-x)-(x-15)=0

We add all the numbers together, and all the variables

3(-1x+135)-(x-15)=0

We multiply parentheses

-3x-(x-15)+405=0

We get rid of parentheses

-3x-x+15+405=0

We add all the numbers together, and all the variables

-4x+420=0

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

-4x=-420

x=-420/-4

x=+105

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