20=5(y-1)

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Solution for 20=5(y-1) equation: 



20=5(y-1)

We move all terms to the left:

20-(5(y-1))=0



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

5(y-1)

We multiply parentheses

5y-5

Back to the equation:

-(5y-5)



We get rid of parentheses

-5y+5+20=0

We add all the numbers together, and all the variables

-5y+25=0

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

-5y=-25

y=-25/-5

y=+5

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