42+x=4x-18=180

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Solution for 42+x=4x-18=180 equation: 



42+x=4x-18=180

We move all terms to the left:

42+x-(4x-18)=0

We get rid of parentheses

x-4x+18+42=0

We add all the numbers together, and all the variables

-3x+60=0

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

-3x=-60

x=-60/-3

x=+20

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