-2=0.4/x

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Solution for -2=0.4/x equation: 



-2=0.4/x

We move all terms to the left:

-2-(0.4/x)=0



Domain of the equation: x)!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(+0.4/x)-2=0

We get rid of parentheses

-0.4/x-2=0

We multiply all the terms by the denominator


-2*x-0.4=0

We add all the numbers together, and all the variables

-2x-0.4=0

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

-2x=0.4

x=0.4/-2

x=-0.4/2

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