А)11/16-9/20 б)7/12+2/4-0.4

Question

А)11/16-9/20 б)7/12+2/4-0.4

Answer 1

Решение смотри на фото

Answer 2

11/16-9/20=0.6875-0.45=0.2375
7/12+2/4-0.4=0.58+0.5-0.4=0.68