42r-18=8

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Solution for 42r-18=8 equation: 



42r-18=8

We move all terms to the left:

42r-18-(8)=0

We add all the numbers together, and all the variables

42r-26=0

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

42r=26

r=26/42

r=13/21

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