-3(1+4r)=-99

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Solution for -3(1+4r)=-99 equation: 



-3(1+4r)=-99

We move all terms to the left:

-3(1+4r)-(-99)=0

We add all the numbers together, and all the variables

-3(4r+1)-(-99)=0

We add all the numbers together, and all the variables

-3(4r+1)+99=0

We multiply parentheses

-12r-3+99=0

We add all the numbers together, and all the variables

-12r+96=0

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

-12r=-96

r=-96/-12

r=+8

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