89=2r+3

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Solution for 89=2r+3 equation: 



89=2r+3

We move all terms to the left:

89-(2r+3)=0

We get rid of parentheses

-2r-3+89=0

We add all the numbers together, and all the variables

-2r+86=0

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

-2r=-86

r=-86/-2

r=+43

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