420=-1400/(0.25*x)

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Solution for 420=-1400/(0.25*x) equation: 



420=-1400/(0.25x)

We move all terms to the left:

420-(-1400/(0.25x))=0



Domain of the equation: (0.25x))!=0

x!=0/1

x!=0

x∈R



We add all the numbers together, and all the variables

-(-1400/(+0.25x))+420=0

We multiply all the terms by the denominator


-(-1400+420*(+0.25x))=0



We calculate terms in parentheses: -(-1400+420*(+0.25x)), so:

-1400+420*(+0.25x)

determiningTheFunctionDomain
420*(+0.25x)-1400

We multiply parentheses

0x-1400

We add all the numbers together, and all the variables

x-1400

Back to the equation:

-(x-1400)



We get rid of parentheses

-x+1400=0

We add all the numbers together, and all the variables

-1x+1400=0

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

-x=-1400

x=-1400/-1

x=+1400

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