8r-5=21

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Solution for 8r-5=21 equation: 



8r-5=21

We move all terms to the left:

8r-5-(21)=0

We add all the numbers together, and all the variables

8r-26=0

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

8r=26

r=26/8

r=3+1/4

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