Выполните действие (9-2 2/3×2 1/7)×21/46

ответ
9\35 - 3\28 =
= 9\(7*5) - 3\(7*4) =
= (4\4) * 9\(7*5) - (5\5) * 3\(7*4) =
= 36\140 - 15\140 =
= (36 - 15)\140 = 21\140 =
= (7*3)\(7*20) =
= (7\7) * (3\20) = 3\20

(9-8/3*15/1 ) * 21/46=
(9-120/21)* 21/46=
(189/21-120/21)* 21/46=
69/46=1.5