Найдите значение выражения. 1) 1(2/3) * 3 - (1(1/3) + 2(2/9))

1) а) 1(2/3) * 3 = 5/3 * 3 = 5
б) 1(1/3) + 2(2/9) = 1(3/9) + 2(2/9) = 3(5/9)
в) 3(5/9) * 3/16 = 32/9 * 3/16 = 2/3
г) 5 - 2/3 = 4(1/3).

2) а) 1 - 3/8 = 5/8
б) 1 - 1/3 = 2/3
в) 5/8 * 2/3 = 5/12
г) 1(3/5) * 3(1/3) = 8/5 * 10/3 = 5(1/3)
д) 5(1/3) + 5/12 = 5(1/42).

3) а) 1(3/16) * 8 = 9(1/2)
б) 2(1/42) * 2(6/17) = 85/42 * 40/17 = 100/21 = 4(16/21)
в) 1(11/28) * 1(3/13) = 39/28 * 16/13 = 12/7 = 1(5/7)
г) 9(1/2) - 4(16/21) - 1(5/7) = 9(21/42) - 4(32/42) - 1(30/42) = 3(1/42)