(90-x)+(180-3x)=180-(90-2x)

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Solution for (90-x)+(180-3x)=180-(90-2x) equation: 



(90-x)+(180-3x)=180-(90-2x)

We move all terms to the left:

(90-x)+(180-3x)-(180-(90-2x))=0

We add all the numbers together, and all the variables

(-1x+90)+(-3x+180)-(180-(-2x+90))=0

We get rid of parentheses

-1x-3x-(180-(-2x+90))+90+180=0



We calculate terms in parentheses: -(180-(-2x+90)), so:

180-(-2x+90)

determiningTheFunctionDomain
-(-2x+90)+180

We get rid of parentheses

2x-90+180

We add all the numbers together, and all the variables

2x+90

Back to the equation:

-(2x+90)



We add all the numbers together, and all the variables

-4x-(2x+90)+270=0

We get rid of parentheses

-4x-2x-90+270=0

We add all the numbers together, and all the variables

-6x+180=0

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

-6x=-180

x=-180/-6

x=+30

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