(3x-40)+4x=180

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Solution for (3x-40)+4x=180 equation: 



(3x-40)+4x=180

We move all terms to the left:

(3x-40)+4x-(180)=0

We add all the numbers together, and all the variables

4x+(3x-40)-180=0

We get rid of parentheses

4x+3x-40-180=0

We add all the numbers together, and all the variables

7x-220=0

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

7x=220

x=220/7

x=31+3/7

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