12-1/5r=2+1

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Solution for 12-1/5r=2+1 equation: 



12-1/5r=2+1

We move all terms to the left:

12-1/5r-(2+1)=0



Domain of the equation: 5r!=0

r!=0/5

r!=0

r∈R



We add all the numbers together, and all the variables

-1/5r+12-3=0

We add all the numbers together, and all the variables

-1/5r+9=0

We multiply all the terms by the denominator


9*5r-1=0

Wy multiply elements

45r-1=0

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

45r=1

r=1/45

r=1/45

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