Помогите!
Решите 2 примера
а) -7/18-(4 5/12+4/9)
б)3/16×(-4/15)-11/12:1 5/6

а)-7/18-(4 5/12+4/9) = -7/18-(4 15/36+16/36) = -7/18-4 31/36 = -14/36-4 31/36 = -4 45/36 = -4 5/4 = -5 1/4.
б)3/16*(-4/15)-11/12:1 5/6 = -1/20-11/12:11/6 = -1/20-1/2 = -1/20-10/20 = -11/20