-3+8(1-7.5y)=20.5

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Solution for -3+8(1-7.5y)=20.5 equation: 



-3+8(1-7.5y)=20.5

We move all terms to the left:

-3+8(1-7.5y)-(20.5)=0

We add all the numbers together, and all the variables

8(-7.5y+1)-3-(20.5)=0

We add all the numbers together, and all the variables

8(-7.5y+1)-23.5=0

We multiply parentheses

-56y+8-23.5=0

We add all the numbers together, and all the variables

-56y-15.5=0

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

-56y=15.5

y=15.5/-56

y=-10.3333333333/37.3333333333

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