150/4=2100/x

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Solution for 150/4=2100/x equation: 


D( x )

x = 0

x = 0

x = 0

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

150/4 = 2100/x // - 2100/x

150/4-(2100/x) = 0

150/4-2100*x^-1 = 0

-2100*x^-1 = -75/2 // : -2100

x^-1 = 1/56

-1 < 0

1/(x^1) = 1/56 // * x^1

1 = 1/56*x^1 // : 1/56

56 = x^1

x = 56

x = 56

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