2r+12=16

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Solution for 2r+12=16 equation: 



2r+12=16

We move all terms to the left:

2r+12-(16)=0

We add all the numbers together, and all the variables

2r-4=0

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

2r=4

r=4/2

r=2

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