20/r=-12

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Solution for 20/r=-12 equation: 



20/r=-12

We move all terms to the left:

20/r-(-12)=0



Domain of the equation: r!=0

r∈R



We add all the numbers together, and all the variables

20/r+12=0

We multiply all the terms by the denominator


12*r+20=0

We add all the numbers together, and all the variables

12r+20=0

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

12r=-20

r=-20/12

r=-1+2/3

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