21/2x=2/5

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Solution for 21/2x=2/5 equation: 


x in (-oo:+oo)

(21/2)*x = 2/5 // - 2/5

(21/2)*x-(2/5) = 0

(21/2)*x-2/5 = 0

21/2*x-2/5 = 0 // + 2/5

21/2*x = 2/5 // : 21/2

x = 2/5/21/2

x = 4/105

x = 4/105

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