8r+7=51

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Solution for 8r+7=51 equation: 



8r+7=51

We move all terms to the left:

8r+7-(51)=0

We add all the numbers together, and all the variables

8r-44=0

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

8r=44

r=44/8

r=5+1/2

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