0.5r+15=9

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Solution for 0.5r+15=9 equation: 



0.5r+15=9

We move all terms to the left:

0.5r+15-(9)=0

We add all the numbers together, and all the variables

0.5r+6=0

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

0.5r=-6

r=-6/0.5

r=-12

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