Question

1) Daca scadem 1,4 dintr-un numar obtinem 2 intregi 1/3.Afla numarul.
2) Daca din 2,(7) scadem un numar obtinem 1/3.Afla numarul.

Answer 1

1)
n - 1,4 = 2 1/3
n - 1,4 = (2×3+1)/3
n - 14/10 = 7/3
n - 7/5 = 7/3
n = 7/3 + 7/5
n = 35/15 + 21/15
n = 56/15

2)
2,(7) - n = 1/3
(27-2)/9 - n = 1/3
25/9 - n = 1/3 |×9
25 - 9n = 3
9n = 25-3
9n = 22
n = 22/9