39/40=2x/40

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Solution for 39/40=2x/40 equation: 


x in (-oo:+oo)

39/40 = (2*x)/40 // - (2*x)/40

39/40-((2*x)/40) = 0

(-1/20)*x+39/40 = 0

39/40-1/20*x = 0 // - 39/40

-1/20*x = -39/40 // : -1/20

x = -39/40/(-1/20)

x = 39/2

x = 39/2

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