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

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Solution for (x-1)+x+(x+1)=135 equation: 



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

x+x+x-1+1-135=0

We add all the numbers together, and all the variables

3x-135=0

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

3x=135

x=135/3

x=45

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