10r+11-5r=66

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Solution for 10r+11-5r=66 equation: 



10r+11-5r=66

We move all terms to the left:

10r+11-5r-(66)=0

We add all the numbers together, and all the variables

5r-55=0

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

5r=55

r=55/5

r=11

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