20=40/z

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Solution for 20=40/z equation: 



20=40/z

We move all terms to the left:

20-(40/z)=0



Domain of the equation: z)!=0

z!=0/1

z!=0

z∈R



We add all the numbers together, and all the variables

-(+40/z)+20=0

We get rid of parentheses

-40/z+20=0

We multiply all the terms by the denominator


20*z-40=0

We add all the numbers together, and all the variables

20z-40=0

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

20z=40

z=40/20

z=2

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