3=1.5r+2.25

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Solution for 3=1.5r+2.25 equation: 



3=1.5r+2.25

We move all terms to the left:

3-(1.5r+2.25)=0

We get rid of parentheses

-1.5r-2.25+3=0

We add all the numbers together, and all the variables

-1.5r+0.75=0

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

-1.5r=-0.75

r=-0.75/-1.5

r=0.75/1.5

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