18-9r=6r-12

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Solution for 18-9r=6r-12 equation:



18-9r=6r-12
We move all terms to the left:
18-9r-(6r-12)=0
We get rid of parentheses
-9r-6r+12+18=0
We add all the numbers together, and all the variables
-15r+30=0
We move all terms containing r to the left, all other terms to the right
-15r=-30
r=-30/-15
r=+2

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