(7X/10)/(21X/5)

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Solution for (7X/10)/(21X/5) equation: 


D( X )

(21*X)/5 = 0

(21*X)/5 = 0

(21*X)/5 = 0

21/5*X = 0 // : 21/5

X = 0

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

((7*X)/10)/((21*X)/5) = 0

1/6 = 0

X belongs to the empty set

X belongs to the empty set

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