8(s-81)=80

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Solution for 8(s-81)=80 equation: 



8(s-81)=80

We move all terms to the left:

8(s-81)-(80)=0

We multiply parentheses

8s-648-80=0

We add all the numbers together, and all the variables

8s-728=0

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

8s=728

s=728/8

s=91

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