20r-45r=5

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Solution for 20r-45r=5 equation: 



20r-45r=5

We move all terms to the left:

20r-45r-(5)=0

We add all the numbers together, and all the variables

-25r-5=0

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

-25r=5

r=5/-25

r=-1/5

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