7(-6+7r)=40+8r

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Solution for 7(-6+7r)=40+8r equation: 



7(-6+7r)=40+8r

We move all terms to the left:

7(-6+7r)-(40+8r)=0

We add all the numbers together, and all the variables

7(7r-6)-(8r+40)=0

We multiply parentheses

49r-(8r+40)-42=0

We get rid of parentheses

49r-8r-40-42=0

We add all the numbers together, and all the variables

41r-82=0

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

41r=82

r=82/41

r=2

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