(180-x)=3(90-x)+12

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Solution for (180-x)=3(90-x)+12 equation: 



(180-x)=3(90-x)+12

We move all terms to the left:

(180-x)-(3(90-x)+12)=0

We add all the numbers together, and all the variables

(-1x+180)-(3(-1x+90)+12)=0

We get rid of parentheses

-1x-(3(-1x+90)+12)+180=0



We calculate terms in parentheses: -(3(-1x+90)+12), so:

3(-1x+90)+12

We multiply parentheses

-3x+270+12

We add all the numbers together, and all the variables

-3x+282

Back to the equation:

-(-3x+282)



We get rid of parentheses

-1x+3x-282+180=0

We add all the numbers together, and all the variables

2x-102=0

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

2x=102

x=102/2

x=51

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