0.9r=4.5

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Solution for 0.9r=4.5 equation: 



0.9r=4.5

We move all terms to the left:

0.9r-(4.5)=0

We add all the numbers together, and all the variables

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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