21x/-10=2/5

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Solution for 21x/-10=2/5 equation: 


x in (-oo:+oo)

(21*x)/(-10) = 2/5 // - 2/5

(21*x)/(-10)-(2/5) = 0

(21*x)/(-10)-2/5 = 0

-21/10*x-2/5 = 0 // + 2/5

-21/10*x = 2/5 // : -21/10

x = 2/5/(-21/10)

x = -4/21

x = -4/21

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