89=5r+3(2+7r)

Solution for 89=5r+3(2+7r) equation:

89=5r+3(2+7r)

We move all terms to the left:

89-(5r+3(2+7r))=0

We add all the numbers together, and all the variables

-(5r+3(7r+2))+89=0


We calculate terms in parentheses: -(5r+3(7r+2)), so:

5r+3(7r+2)

We multiply parentheses

5r+21r+6

We add all the numbers together, and all the variables

26r+6

Back to the equation:

-(26r+6)


We get rid of parentheses

-26r-6+89=0

We add all the numbers together, and all the variables

-26r+83=0

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

-26r=-83

r=-83/-26

r=3+5/26