Question 550784
={{{((1)/(4x)-(4)/(x))/((3)/(2x)+(3)/(5x))}}}
Take LCD
={{{((1-16)/4x)/((15+6)/10x)}}}
={{{(-15/4x)/(21/10x)}}}
={{{(-15/4x)(10x/21)}}}
={{{(-cross(15)/cross(4x))(cross(10x)/cross(21))}}}
={{{(-5/2)(5/7))}}}
={{{-25/14}}}
={{{-(1&11/14)}}}