(3 4/5 : 19/25-9, 8)×3/8- 3 9/11

( 3 4/5 : 19/25 - 9,8) • 3/8 - 3 9/11 = ( 19/5 : 19/25 - 9,8) • 3/8 - 42/11 = (19/5 • 25/19 - 9,8) • 3/8 - 42/11 = ( 5 - 9,8 ) • 3/8 - 42/11 = -4,8 • 3/8 - 42/11 = -24/5 • 3/8 - 42/11 = -3/5 • 3 - 42/11 = -9/5 -42/11 = -309/55 = -5 34/55