(r-81)+89=10

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Solution for (r-81)+89=10 equation: 



(r-81)+89=10

We move all terms to the left:

(r-81)+89-(10)=0

We add all the numbers together, and all the variables

(r-81)+79=0

We get rid of parentheses

r-81+79=0

We add all the numbers together, and all the variables

r-2=0

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

r=2

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