10(r+8)+18=78

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Solution for 10(r+8)+18=78 equation: 



10(r+8)+18=78

We move all terms to the left:

10(r+8)+18-(78)=0

We add all the numbers together, and all the variables

10(r+8)-60=0

We multiply parentheses

10r+80-60=0

We add all the numbers together, and all the variables

10r+20=0

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

10r=-20

r=-20/10

r=-2

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