r+r+9r=19

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Solution for r+r+9r=19 equation: 



r+r+9r=19

We move all terms to the left:

r+r+9r-(19)=0

We add all the numbers together, and all the variables

11r-19=0

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

11r=19

r=19/11

r=1+8/11

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