8r+3=99

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Solution for 8r+3=99 equation: 



8r+3=99

We move all terms to the left:

8r+3-(99)=0

We add all the numbers together, and all the variables

8r-96=0

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

8r=96

r=96/8

r=12

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