Пошаговое объяснение:
a) 11/4-11/6=33/12-22/12=11/12
б) 22/5+23/6=132/30+115/30=247/30=8 7/30
В) 89/12-(13/8+49/24)=89/12-(39/24+49/24)=
89/12-88/24=178/24-88/24=90/24
2 3/4 - 1 5/6 = 2 9/12 - 1 10/12 = 1 21/12 - 1 10/12 = 11/12
4 2/5 + 3 5/6 = 4 12/30 + 3 25/30 = 7 37/30 = 8 7/30
7 5/12 - (1 5/8 + 2 1/24) = 7 10/24 - (1 15/24 + 2 1/24) = 7 10/24 - 3 16/24 = 6 34/24 - 3 16/24 = 3 18/24 = 3 3/4
Пошаговое объяснение:
a) 11/4-11/6=33/12-22/12=11/12
б) 22/5+23/6=132/30+115/30=247/30=8 7/30
В) 89/12-(13/8+49/24)=89/12-(39/24+49/24)=
89/12-88/24=178/24-88/24=90/24
2 3/4 - 1 5/6 = 2 9/12 - 1 10/12 = 1 21/12 - 1 10/12 = 11/12
4 2/5 + 3 5/6 = 4 12/30 + 3 25/30 = 7 37/30 = 8 7/30
7 5/12 - (1 5/8 + 2 1/24) = 7 10/24 - (1 15/24 + 2 1/24) = 7 10/24 - 3 16/24 = 6 34/24 - 3 16/24 = 3 18/24 = 3 3/4