Question

Отрицательные числа
А)21+(-5)=
Б) - 2 1/6 + 3 2/3=
В)2/9+(-14/11)=

Answer 1

А) 21+(-5) = 21-5 = 16

Б) -2 1/6+3 2/3 = -13/6+11/3 = -13/6+22/6 = +(22/6-13/6) = 9/6 = 3/2 = 1 1/2

В) 2/9+(-14/11) = 2/9-14/11 = 22/99-126/99 = -(126/99-22/99) = -104/99 = -1 5/99