11r-3=7r-15

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Solution for 11r-3=7r-15 equation: 



11r-3=7r-15

We move all terms to the left:

11r-3-(7r-15)=0

We get rid of parentheses

11r-7r+15-3=0

We add all the numbers together, and all the variables

4r+12=0

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

4r=-12

r=-12/4

r=-3

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