122=2(5+8r)

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Solution for 122=2(5+8r) equation: 



122=2(5+8r)

We move all terms to the left:

122-(2(5+8r))=0

We add all the numbers together, and all the variables

-(2(8r+5))+122=0



We calculate terms in parentheses: -(2(8r+5)), so:

2(8r+5)

We multiply parentheses

16r+10

Back to the equation:

-(16r+10)



We get rid of parentheses

-16r-10+122=0

We add all the numbers together, and all the variables

-16r+112=0

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

-16r=-112

r=-112/-16

r=+7

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