180-y=5(90-y)

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Solution for 180-y=5(90-y) equation: 



180-y=5(90-y)

We move all terms to the left:

180-y-(5(90-y))=0

We add all the numbers together, and all the variables

-y-(5(-1y+90))+180=0

We add all the numbers together, and all the variables

-1y-(5(-1y+90))+180=0



We calculate terms in parentheses: -(5(-1y+90)), so:

5(-1y+90)

We multiply parentheses

-5y+450

Back to the equation:

-(-5y+450)



We get rid of parentheses

-1y+5y-450+180=0

We add all the numbers together, and all the variables

4y-270=0

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

4y=270

y=270/4

y=67+1/2

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