3(180-x)=90-x

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



3(180-x)=90-x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We multiply parentheses

-3x-(-1x+90)+540=0

We get rid of parentheses

-3x+1x-90+540=0

We add all the numbers together, and all the variables

-2x+450=0

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

-2x=-450

x=-450/-2

x=+225

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