1000/4=7/x

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Solution for 1000/4=7/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

1000/4 = 7/x // - 7/x

1000/4-(7/x) = 0

1000/4-7*x^-1 = 0

-7*x^-1 = -250 // : -7

x^-1 = 250/7

-1 < 0

1/(x^1) = 250/7 // * x^1

1 = 250/7*x^1 // : 250/7

7/250 = x^1

x = 7/250

x = 7/250

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