400/x+40-400/x=30

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Solution for 400/x+40-400/x=30 equation: 



400/x+40-400/x=30

We move all terms to the left:

400/x+40-400/x-(30)=0



Domain of the equation: x!=0

x∈R



We add all the numbers together, and all the variables

400/x-400/x+10=0

We multiply all the terms by the denominator


10*x+400-400=0

We add all the numbers together, and all the variables

10x=0

x=0/10

x=0

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