3(6r-1)-7+21r=68

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Solution for 3(6r-1)-7+21r=68 equation: 



3(6r-1)-7+21r=68

We move all terms to the left:

3(6r-1)-7+21r-(68)=0

We add all the numbers together, and all the variables

21r+3(6r-1)-75=0

We multiply parentheses

21r+18r-3-75=0

We add all the numbers together, and all the variables

39r-78=0

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

39r=78

r=78/39

r=2

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