7r+3=8r-6

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Solution for 7r+3=8r-6 equation: 



7r+3=8r-6

We move all terms to the left:

7r+3-(8r-6)=0

We get rid of parentheses

7r-8r+6+3=0

We add all the numbers together, and all the variables

-1r+9=0

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

-r=-9

r=-9/-1

r=+9

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