4.5=0.9r

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Solution for 4.5=0.9r equation:



4.5=0.9r
We move all terms to the left:
4.5-(0.9r)=0
We add all the numbers together, and all the variables
-(+0.9r)+4.5=0
We get rid of parentheses
-0.9r+4.5=0
We move all terms containing r to the left, all other terms to the right
-0.9r=-4.5
r=-4.5/-0.9
r=+5

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