31-8r=3(5-8r)

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Solution for 31-8r=3(5-8r) equation: 



31-8r=3(5-8r)

We move all terms to the left:

31-8r-(3(5-8r))=0

We add all the numbers together, and all the variables

-8r-(3(-8r+5))+31=0



We calculate terms in parentheses: -(3(-8r+5)), so:

3(-8r+5)

We multiply parentheses

-24r+15

Back to the equation:

-(-24r+15)



We get rid of parentheses

-8r+24r-15+31=0

We add all the numbers together, and all the variables

16r+16=0

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

16r=-16

r=-16/16

r=-1

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