-21/4=r-1/4

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Solution for -21/4=r-1/4 equation: 



-21/4=r-1/4

We move all terms to the left:

-21/4-(r-1/4)=0

We add all the numbers together, and all the variables

-(+r-1/4)-21/4=0

We get rid of parentheses

-r+1/4-21/4=0

We multiply all the terms by the denominator


-r*4+1-21=0

We add all the numbers together, and all the variables

-r*4-20=0

Wy multiply elements

-4r-20=0

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

-4r=20

r=20/-4

r=-5

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