10r-5r-3r=-12

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Solution for 10r-5r-3r=-12 equation: 



10r-5r-3r=-12

We move all terms to the left:

10r-5r-3r-(-12)=0

We add all the numbers together, and all the variables

2r+12=0

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

2r=-12

r=-12/2

r=-6

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