(x-45)+(x-45)+(x-45)+x-x=540

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Solution for (x-45)+(x-45)+(x-45)+x-x=540 equation: 



(x-45)+(x-45)+(x-45)+x-x=540

We move all terms to the left:

(x-45)+(x-45)+(x-45)+x-x-(540)=0

We add all the numbers together, and all the variables

(x-45)+(x-45)+(x-45)-540=0

We get rid of parentheses

x+x+x-45-45-45-540=0

We add all the numbers together, and all the variables

3x-675=0

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

3x=675

x=675/3

x=225

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