90+(180-4x)+x=180

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Solution for 90+(180-4x)+x=180 equation: 



90+(180-4x)+x=180

We move all terms to the left:

90+(180-4x)+x-(180)=0

We add all the numbers together, and all the variables

(-4x+180)+x+90-180=0

We add all the numbers together, and all the variables

x+(-4x+180)-90=0

We get rid of parentheses

x-4x+180-90=0

We add all the numbers together, and all the variables

-3x+90=0

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

-3x=-90

x=-90/-3

x=+30

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