-5(3r-4)=80

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Solution for -5(3r-4)=80 equation: 



-5(3r-4)=80

We move all terms to the left:

-5(3r-4)-(80)=0

We multiply parentheses

-15r+20-80=0

We add all the numbers together, and all the variables

-15r-60=0

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

-15r=60

r=60/-15

r=-4

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