30/3x=0.4

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Solution for 30/3x=0.4 equation: 



30/3x=0.4

We move all terms to the left:

30/3x-(0.4)=0



Domain of the equation: 3x!=0

x!=0/3

x!=0

x∈R



We add all the numbers together, and all the variables

30/3x-0.4=0

We multiply all the terms by the denominator


-(0.4)*3x+30=0

We multiply parentheses

-1.2x+30=0

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

-1.2x=-30

x=-30/-1.2

x=+25

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