Вычеслите -7/16 - 1 18 / 40+6 / 20 =
1) - 7/16 - 1 18/40 = - 7/16 - 29/20 =-35/80 - 116/80 = - 151/80 = - 1 71/80 2) - 1 71/80 + 6/20 = - 151/80 + 3/10 =-151/80 + 24/80 = - 127/80 = - 1 47/80 ответ -1 47/80