Найти значение выражения:
1) (7/9 - 2/3) + (3 - 1 11/24)
2) 8 8/15 - (3 7/30 + 2 11/12)

спасибо

Ок!

№11) 7/9 - 2/3 = 7/9 - 6/9 = 1/92) 3 - 1  11/24 = 1целая 13/243) 1/9 + 1ц.13/24 = 8/72 + 111/72 = 119/72 = 1ц. 47/72---------------------------------------------------------№21) 3 7/30 + 2 11/12 = 5 + (7/30 + 11/12) = 5 + 14/60 + 55/60 = 5ц.69/60 = 6ц.9/60 = 6ц 3/202) 8 8/15 - 6 3/20 = 128/15 - 126/20 = 512/60 - 378/60 = 134/60 = 2 4/60 = 2 1/15