Question

(8:2 2/5) общая дробь и в знаменателе (5 1/4:7)

Answer 1

(8:2 2/5) / (5 1/4:7) = (8/1:12/5) / (21/4:7/1) = (8/1*5/12) / (21/4*1/7) = (10/3) / (3/4) = 10/3 * 4/3 = 40/9 = 4 4/9

Answer 2

знак деления между скобками это общая дробь?

Answer 3

да

Answer 4

(2 1/7:5/7) / (4:8/9) = (15/7*7/5) / (4/1*9/8) = 3 : 9/2 = 3*2/9 = 2/3

Answer 5

ок. пасибки