1) 2/3+(-10 1/3) = 2/3-31/3 = -29/3 = -9 2/3
2) -3/8+4/7 = 4/7-3/8 = 11/56
3) 3/5+(-1 5/6) = 3/5-11/6 = - 37/30 = -1 7/30
4) 2/9+(-1 5/6) = 2/9-11/6 = -27/18 = -1 9/18
5) 4/5+(-2/7) = 4/5-2/7 = 18/35
6) -9+2/9 = 2/9-9 = -79/9
Ответ: Х € ( от минус бесконечности; до 0] объединение от [ 25; до плюс бесконечности)
~•~•~•ZLOY_TIGROVSKIY~•~•~•
(10 3/4 - 12 : 1 1/5) * 4/9 + 2 1/6 + 3 1/4 : 5 1/5 = 3,1251) 12 : 1 1/5 = 12 : 6/5 = 12 * 5/6 = 102) 10 3/4 - 10 = 3/43) 3/4 * 4/9 = 1/34) 3 1/4 : 5 1/5 = 13/4 : 26/5 = 13/4 * 5/26 = 5/85) 1/3 + 2 1/6= 1/3+ 13/6 = 15/66) 15/6 + 5/8= 3 3/24 = 3,125