15=1.5r+3.

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Solution for 15=1.5r+3. equation:



15=1.5r+3.
We move all terms to the left:
15-(1.5r+3.)=0
We add all the numbers together, and all the variables
-(1.5r+3)+15=0
We get rid of parentheses
-1.5r-3+15=0
We add all the numbers together, and all the variables
-1.5r+12=0
We move all terms containing r to the left, all other terms to the right
-1.5r=-12
r=-12/-1.5
r=+8

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