7(8r-7)-2=397

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Solution for 7(8r-7)-2=397 equation: 



7(8r-7)-2=397

We move all terms to the left:

7(8r-7)-2-(397)=0

We add all the numbers together, and all the variables

7(8r-7)-399=0

We multiply parentheses

56r-49-399=0

We add all the numbers together, and all the variables

56r-448=0

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

56r=448

r=448/56

r=8

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