20r-5=9r+72

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Solution for 20r-5=9r+72 equation: 



20r-5=9r+72

We move all terms to the left:

20r-5-(9r+72)=0

We get rid of parentheses

20r-9r-72-5=0

We add all the numbers together, and all the variables

11r-77=0

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

11r=77

r=77/11

r=7

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