2r+19r-13r=12

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Solution for 2r+19r-13r=12 equation: 



2r+19r-13r=12

We move all terms to the left:

2r+19r-13r-(12)=0

We add all the numbers together, and all the variables

8r-12=0

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

8r=12

r=12/8

r=1+1/2

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