15-y=4(15-y)

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Solution for 15-y=4(15-y) equation: 



15-y=4(15-y)

We move all terms to the left:

15-y-(4(15-y))=0

We add all the numbers together, and all the variables

-y-(4(-1y+15))+15=0

We add all the numbers together, and all the variables

-1y-(4(-1y+15))+15=0



We calculate terms in parentheses: -(4(-1y+15)), so:

4(-1y+15)

We multiply parentheses

-4y+60

Back to the equation:

-(-4y+60)



We get rid of parentheses

-1y+4y-60+15=0

We add all the numbers together, and all the variables

3y-45=0

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

3y=45

y=45/3

y=15

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