40/x=7/4

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Solution for 40/x=7/4 equation: 


D( x )

x = 0

x = 0

x = 0

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

40/x = 7/4 // - 7/4

40/x-(7/4) = 0

40/x-7/4 = 0

40*x^-1 = 7/4 // : 40

x^-1 = 7/160

-1 < 0

1/(x^1) = 7/160 // * x^1

1 = 7/160*x^1 // : 7/160

160/7 = x^1

x = 160/7

x = 160/7

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