15r+7=11r-20

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Solution for 15r+7=11r-20 equation: 



15r+7=11r-20

We move all terms to the left:

15r+7-(11r-20)=0

We get rid of parentheses

15r-11r+20+7=0

We add all the numbers together, and all the variables

4r+27=0

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

4r=-27

r=-27/4

r=-6+3/4

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