r/4+9=21r=

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Solution for r/4+9=21r= equation: 



r/4+9=21r=

We move all terms to the left:

r/4+9-(21r)=0

We add all the numbers together, and all the variables

-21r+r/4+9=0

We multiply all the terms by the denominator


-21r*4+r+9*4=0

We add all the numbers together, and all the variables

r-21r*4+36=0

Wy multiply elements

r-84r+36=0

We add all the numbers together, and all the variables

-83r+36=0

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

-83r=-36

r=-36/-83

r=36/83

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