31/4=21/3+r

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Solution for 31/4=21/3+r equation: 



31/4=21/3+r

We move all terms to the left:

31/4-(21/3+r)=0



Domain of the equation: 3+r)!=0

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

r)!=-3

r!=-3/1

r!=-3

r∈R



We add all the numbers together, and all the variables

-(r+7)+31/4=0

We get rid of parentheses

-r-7+31/4=0

We multiply all the terms by the denominator


-r*4+31-7*4=0

We add all the numbers together, and all the variables

-r*4+3=0

Wy multiply elements

-4r+3=0

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

-4r=-3

r=-3/-4

r=3/4

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