Помогите плиззз срочно
1) (10 12/3-2 9/13) 2) 5 6/13 + (10 12/3 - 2 9/13) 1)10 12/13 - 2 9/13 = 8 3/13 2) 5 6/13 + 8 3/13 = 13 9/13 5 6/13 + (10 12/13 - 2 9/13) = 13 9/13