0.5r-3=12-4.5r

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Solution for 0.5r-3=12-4.5r equation: 



0.5r-3=12-4.5r

We move all terms to the left:

0.5r-3-(12-4.5r)=0

We add all the numbers together, and all the variables

0.5r-(-4.5r+12)-3=0

We get rid of parentheses

0.5r+4.5r-12-3=0

We add all the numbers together, and all the variables

5r-15=0

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

5r=15

r=15/5

r=3

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