5-3r=20

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Solution for 5-3r=20 equation: 



5-3r=20

We move all terms to the left:

5-3r-(20)=0

We add all the numbers together, and all the variables

-3r-15=0

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

-3r=15

r=15/-3

r=-5

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