180-x=3(90-x)-4

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Solution for 180-x=3(90-x)-4 equation: 



180-x=3(90-x)-4

We move all terms to the left:

180-x-(3(90-x)-4)=0

We add all the numbers together, and all the variables

-x-(3(-1x+90)-4)+180=0

We add all the numbers together, and all the variables

-1x-(3(-1x+90)-4)+180=0



We calculate terms in parentheses: -(3(-1x+90)-4), so:

3(-1x+90)-4

We multiply parentheses

-3x+270-4

We add all the numbers together, and all the variables

-3x+266

Back to the equation:

-(-3x+266)



We get rid of parentheses

-1x+3x-266+180=0

We add all the numbers together, and all the variables

2x-86=0

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

2x=86

x=86/2

x=43

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