8r+40=5(1+3r)

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Solution for 8r+40=5(1+3r) equation: 



8r+40=5(1+3r)

We move all terms to the left:

8r+40-(5(1+3r))=0

We add all the numbers together, and all the variables

8r-(5(3r+1))+40=0



We calculate terms in parentheses: -(5(3r+1)), so:

5(3r+1)

We multiply parentheses

15r+5

Back to the equation:

-(15r+5)



We get rid of parentheses

8r-15r-5+40=0

We add all the numbers together, and all the variables

-7r+35=0

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

-7r=-35

r=-35/-7

r=+5

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