Помогите решитьочень срочнопожалуйста

(4 1/15 - 3 9/10) * 6 6/7 + 2 = 3 1/7 1) 4 1/15 - 3 9/10 = 4 2/30 - 3 27/30 = 3 32/30 - 3 27/30 = 5/30 = 1/6 2) 1/6 * 6 6/7 = 1/6 * 48/7 = 1/1 * 8/7 = 8/7 = 1 1/7 3) 1 1/7 + 2 = 3 1/7       1/3 * (4 - (1 1/2)³ ) * ( 3 - 2 7/15) = 1/9 1) 4 - ( 1 1/2)³ = 4 - (3/2)³ = 4 - 3/2 * 3/2 * 3/2 = 4 - 27/8 = 3 8/8 - 3 3/8 = 5/8 2) 3 - 2 7/15 = 2 15/15 - 2 7/15 = 8/15 3) 1/3 * 5/8 = 5/24 4) 5/24 * 8/15 = 1/3 * 1/3 = 1/9