12r-40=-16

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Solution for 12r-40=-16 equation: 



12r-40=-16

We move all terms to the left:

12r-40-(-16)=0

We add all the numbers together, and all the variables

12r-24=0

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

12r=24

r=24/12

r=2

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