3x=135-x

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Solution for 3x=135-x equation: 



3x=135-x

We move all terms to the left:

3x-(135-x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x+1x-135=0

We add all the numbers together, and all the variables

4x-135=0

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

4x=135

x=135/4

x=33+3/4

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