3=r/4+5

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Solution for 3=r/4+5 equation: 



3=r/4+5

We move all terms to the left:

3-(r/4+5)=0

We get rid of parentheses

-r/4-5+3=0

We multiply all the terms by the denominator


-r-5*4+3*4=0

We add all the numbers together, and all the variables

-1r-8=0

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

-r=8

r=8/-1

r=-8

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