Question 561057
={{{(1&1/4)+(-5&3/4)}}}
={{{(1&1/4)-(5&3/4)}}}
={{{5/4-23/4)}}}
Take LCD
={{{(5-23)/4}}}
={{{-18/4}}}
={{{-18/4}}}
={{{-cross(18)/cross(4)}}}
={{{-9/2}}}
={{{-(4&1/2)}}}