выполните действия:9 2/5-(8 1/3-7 1/4+5 1/6)=

9 2/5-(8 1/3-7 1/4+5 1/6)=3 2/601) 8 1/3-7 1/4=8 4/12-7 3/12=1 1/122) 1 1/12+5 1/6=1 1/12+5 2/12=6 3/123)9 2/5-6 3/12=9 24/60-6 15/60=3 9/60