-4(r-99)=76

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Solution for -4(r-99)=76 equation: 



-4(r-99)=76

We move all terms to the left:

-4(r-99)-(76)=0

We multiply parentheses

-4r+396-76=0

We add all the numbers together, and all the variables

-4r+320=0

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

-4r=-320

r=-320/-4

r=+80

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