-9-15y=18y+9(-6y+20)

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Solution for -9-15y=18y+9(-6y+20) equation: 



-9-15y=18y+9(-6y+20)

We move all terms to the left:

-9-15y-(18y+9(-6y+20))=0



We calculate terms in parentheses: -(18y+9(-6y+20)), so:

18y+9(-6y+20)

We multiply parentheses

18y-54y+180

We add all the numbers together, and all the variables

-36y+180

Back to the equation:

-(-36y+180)



We get rid of parentheses

-15y+36y-180-9=0

We add all the numbers together, and all the variables

21y-189=0

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

21y=189

y=189/21

y=9

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