20=r/4+17

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Solution for 20=r/4+17 equation: 



20=r/4+17

We move all terms to the left:

20-(r/4+17)=0

We get rid of parentheses

-r/4-17+20=0

We multiply all the terms by the denominator


-r-17*4+20*4=0

We add all the numbers together, and all the variables

-1r+12=0

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

-r=-12

r=-12/-1

r=+12

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