8r+6=9r-7=180

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Solution for 8r+6=9r-7=180 equation: 



8r+6=9r-7=180

We move all terms to the left:

8r+6-(9r-7)=0

We get rid of parentheses

8r-9r+7+6=0

We add all the numbers together, and all the variables

-1r+13=0

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

-r=-13

r=-13/-1

r=+13

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