(90-x)=1/4(180-x)

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Solution for (90-x)=1/4(180-x) equation: 



(90-x)=1/4(180-x)

We move all terms to the left:

(90-x)-(1/4(180-x))=0



Domain of the equation: 4(180-x))!=0

x∈R



We add all the numbers together, and all the variables

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

We get rid of parentheses

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

We multiply all the terms by the denominator


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

Wy multiply elements

-4x^2(-+360x(-=0

We use the square of the difference formula

-4x^2(-360x(-=0

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