x+3x+(40+x)=180

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



x+3x+(40+x)=180

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

4x+x+40-180=0

We add all the numbers together, and all the variables

5x-140=0

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

5x=140

x=140/5

x=28

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