70 :(5/8+5/6)+(3 1/9 -1/3)×(3/10)2 =

1) 5/8 + 5/6 = 15/24 + 20/24 = 35/24 = 1 11/24;2) 70 : 1 11/24 = 70/1 : 35/24 = 70/1 * 24/35 = 2/1 * 24/1 = 48/1 = 48;3) 3 1/9 - 1/3 = 3 1/9 - 3/9 = 2 10/9 - 3/9 = 2 7/9;4) (3/10)^2 = 3^2/10^2 = 9/100;5) 2 7/9 * 9/100 = 25/9 * 9/100 = 1/1 * 1/4 = 1/4;6) 48 + 1/4 = 48 1/4.Ответ: 48 1/4.