8r-7+4=18

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Solution for 8r-7+4=18 equation: 



8r-7+4=18

We move all terms to the left:

8r-7+4-(18)=0

We add all the numbers together, and all the variables

8r-21=0

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

8r=21

r=21/8

r=2+5/8

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