40=16+8r

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Solution for 40=16+8r equation: 



40=16+8r

We move all terms to the left:

40-(16+8r)=0

We add all the numbers together, and all the variables

-(8r+16)+40=0

We get rid of parentheses

-8r-16+40=0

We add all the numbers together, and all the variables

-8r+24=0

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

-8r=-24

r=-24/-8

r=+3

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