2 1/3 - 2 1/6 = 2 2/6 - 2 1/6 = 1/6
( 1/6 ) ^ - 2 = 6^2 = 36
( 4/9 ) ^ - 1 = 9/4 = 2,25
36 : 2,25 = 16
66 2/3 * 16 : 100 = 3200/3 : 100 = 32/3 = 10 2/3 ( Ответ )
800 100-460×370+83 842: 206=800100-170200+407=630 307
17 целых - 9 целых 4/8=7 целых 1/2