Question

93. Найдите значение выражения a + b – с если:
а) а =3/13
b =7/13
c=5/13

б)a=5/21
b=15/21
c=9/21

в)a=23/75
b=34/75
c=41/75

Answer 1

a)=5/13

б)=11/21

в)=16/75

Answer 2

Пошаговое объяснение:

1. 3/13 + 7/13 - 5/13 = (3+7-5)/13 = 5/13

2. 5/21 + 15/21 - 9/21 = (5+15-9)/21 = 11/21

3. 23/75 + 34/75 - 41/75 = (23+34-41)/75 = (57-41)/75 = 16/75