2.15-r=9

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Solution for 2.15-r=9 equation: 



2.15-r=9

We move all terms to the left:

2.15-r-(9)=0

We add all the numbers together, and all the variables

-1r-6.85=0

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

-r=6.85

r=6.85/-1

r=-6+0.85/1

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