1.

x51y21x101-21 = 2 , where江#-1 and x #1x +1y-12,2 x+1 y-1 2

Answer»

5/(x+1) - 2/(y-1) = 1/2 10/(x+1) + 2/(y-1) = 5/2 Add both the equation 5/(x+1) - 2/(y-1) + 10/(x+1) + 2/(y-1) = 1/2 + 5/2 15/(x+1) = 6/2 x + 1 = 5 x = 4 From first equation 5/5 - 2/(y-1) = 1/2 2/(y-1) = 1 - 1/2 = 1/2 y - 1 = 4 y = 5

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