316=40+12r

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Solution for 316=40+12r equation: 



316=40+12r

We move all terms to the left:

316-(40+12r)=0

We add all the numbers together, and all the variables

-(12r+40)+316=0

We get rid of parentheses

-12r-40+316=0

We add all the numbers together, and all the variables

-12r+276=0

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

-12r=-276

r=-276/-12

r=+23

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