115+20=7-8(9-5y)

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Solution for 115+20=7-8(9-5y) equation: 



115+20=7-8(9-5y)

We move all terms to the left:

115+20-(7-8(9-5y))=0

We add all the numbers together, and all the variables

-(7-8(-5y+9))+115+20=0

We add all the numbers together, and all the variables

-(7-8(-5y+9))+135=0



We calculate terms in parentheses: -(7-8(-5y+9)), so:

7-8(-5y+9)

determiningTheFunctionDomain
-8(-5y+9)+7

We multiply parentheses

40y-72+7

We add all the numbers together, and all the variables

40y-65

Back to the equation:

-(40y-65)



We get rid of parentheses

-40y+65+135=0

We add all the numbers together, and all the variables

-40y+200=0

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

-40y=-200

y=-200/-40

y=+5

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