Question

Wykonaj dodawanie.wyniki podaj w najprostrzej postaci .4 /5 +3/5= , 3cale 5/9+2cale2/9 6calych7/8+2cale 5/8 =zad 2 , wykonaj odejmowanie 6- 5/12 = ,5calych 6/7 -3 cale 2/7 ,9calych 1/9 -7calych 5/6 = , 5 -7/12= , 6cale4/5-2cale 2/5 = 4cale 2/7 +3cale4/7 = 9calych 5/8+2cale 7/8=

Answer 1

4/5 + 3/5 = 7/5 = 1 i 2/5
3 i 5/9 + 2 i 3/9 = 5 i 8/9
6 i 7/8 + 2 i 5/8 = 8 i 12/8 = 9 i 4/8 = 9 i 1/2

zad 2
6 - 5/12 = 5 i 12/12 - 5/12 = 5 i 7/12
5 i 6/7 - 3 i 2/7 = 2 i 4/7
9 i 1/9 - 7 i 5/9 = 8 i 10/9 - 7 i 5/9 = 1 i 5/9
5 - 7/12 = 4 i 12/12 - 7/12 = 4 i 5/12
6 i 4/5 - 2 i 2/5 = 4 i 2/5
4 i 2/7 - 3 i 4/7 = 3 i 9/7 - 3 i 4/7 = 5/7
9 i 5/8 - 2 i 7/8 = 8 i 13/8 - 2 i 7/8 = 6 i 6/8 = 6 i 3/4