X=y-20%of y= y/-20Y/=80Y/.:. EQⁿ-1)(Y-x)/yPUTTING VALUE.(Y-80y/)/y=( y-80y)y=20y/y=202)x/(x-y):. putting value80y//(80y/-y)=80y(80y/-100y/)/=80y(-20y/)/=-16/=-8/50=-4/25=-.16(ÆÑẞWĒRẞ)
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