# 20/4=8/x

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## Solution for 20/4=8/x equation:

D( x )x = 0x = 0x = 0x in (-oo:0) U (0:+oo)20/4 = 8/x // - 8/x20/4-(8/x) = 020/4-8*x^-1 = 0-8*x^-1 = -5 // : -8x^-1 = 5/8-1 < 01/(x^1) = 5/8 // * x^11 = 5/8*x^1 // : 5/88/5 = x^1x = 8/5x = 8/5`