9=3r-3

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Solution for 9=3r-3 equation:



9=3r-3
We move all terms to the left:
9-(3r-3)=0
We get rid of parentheses
-3r+3+9=0
We add all the numbers together, and all the variables
-3r+12=0
We move all terms containing r to the left, all other terms to the right
-3r=-12
r=-12/-3
r=+4

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