9r-79=4r-9

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Solution for 9r-79=4r-9 equation: 



9r-79=4r-9

We move all terms to the left:

9r-79-(4r-9)=0

We get rid of parentheses

9r-4r+9-79=0

We add all the numbers together, and all the variables

5r-70=0

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

5r=70

r=70/5

r=14

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