42/49=60/x

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Solution for 42/49=60/x equation: 


D( x )

x = 0

x = 0

x = 0

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

42/49 = 60/x // - 60/x

42/49-(60/x) = 0

42/49-60*x^-1 = 0

-60*x^-1 = -6/7 // : -60

x^-1 = 1/70

-1 < 0

1/(x^1) = 1/70 // * x^1

1 = 1/70*x^1 // : 1/70

70 = x^1

x = 70

x = 70

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