-7+15r=11+9r

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Solution for -7+15r=11+9r equation: 



-7+15r=11+9r

We move all terms to the left:

-7+15r-(11+9r)=0

We add all the numbers together, and all the variables

15r-(9r+11)-7=0

We get rid of parentheses

15r-9r-11-7=0

We add all the numbers together, and all the variables

6r-18=0

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

6r=18

r=18/6

r=3

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