-2/5x=4/20

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Solution for -2/5x=4/20 equation: 


x in (-oo:+oo)

(-2/5)*x = 4/20 // - 4/20

(-2/5)*x-(4/20) = 0

(-2/5)*x-1/5 = 0

-2/5*x-1/5 = 0 // + 1/5

-2/5*x = 1/5 // : -2/5

x = 1/5/(-2/5)

x = -1/2

x = -1/2

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