1/7r=-4

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Solution for 1/7r=-4 equation: 



1/7r=-4

We move all terms to the left:

1/7r-(-4)=0



Domain of the equation: 7r!=0

r!=0/7

r!=0

r∈R



We add all the numbers together, and all the variables

1/7r+4=0

We multiply all the terms by the denominator


4*7r+1=0

Wy multiply elements

28r+1=0

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

28r=-1

r=-1/28

r=-1/28

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