100+3/20x=400

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Solution for 100+3/20x=400 equation: 



100+3/20x=400

We move all terms to the left:

100+3/20x-(400)=0



Domain of the equation: 20x!=0

x!=0/20

x!=0

x∈R



We add all the numbers together, and all the variables

3/20x-300=0

We multiply all the terms by the denominator


-300*20x+3=0

Wy multiply elements

-6000x+3=0

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

-6000x=-3

x=-3/-6000

x=1/2000

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