Question

Номер 635(Д)
Д) (11ц5/11-8ц21/22):1ц2/3

Answer 1

11 5/11-8 21/22=126/11-197/22=252/22-197/22=55/22=2ц 11/22
2 11/22:12/3=55/22*3/5=33/22=1ц 11/22

Answer 2

1) 11 5/11-8 21/22=11-8+5/11-21/22=3+5/11-21/22=3+10/22-21/22=
=3+ 10-21/22=3+ -11/22=33*22/22-11/22=66-11/22=55/22=5/2=2 1/2
2) 2 1/2:12/3=5/5:5.3=5/2*3/5=3/2=1 1/2