57+(2x)+(x+42)=180

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Solution for 57+(2x)+(x+42)=180 equation: 



57+(2x)+(x+42)=180

We move all terms to the left:

57+(2x)+(x+42)-(180)=0

We add all the numbers together, and all the variables

2x+(x+42)-123=0

We get rid of parentheses

2x+x+42-123=0

We add all the numbers together, and all the variables

3x-81=0

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

3x=81

x=81/3

x=27

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