180-x=3(90-x)+50

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Solution for 180-x=3(90-x)+50 equation: 



180-x=3(90-x)+50

We move all terms to the left:

180-x-(3(90-x)+50)=0

We add all the numbers together, and all the variables

-x-(3(-1x+90)+50)+180=0

We add all the numbers together, and all the variables

-1x-(3(-1x+90)+50)+180=0



We calculate terms in parentheses: -(3(-1x+90)+50), so:

3(-1x+90)+50

We multiply parentheses

-3x+270+50

We add all the numbers together, and all the variables

-3x+320

Back to the equation:

-(-3x+320)



We get rid of parentheses

-1x+3x-320+180=0

We add all the numbers together, and all the variables

2x-140=0

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

2x=140

x=140/2

x=70

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