Question

ajutoooooor ve rog frumooos​

Answer 1

Răspuns:

Explicație pas cu pas:

7/9 + 77/99 + 777/999 = 7/9 + 7/9 + 7/9 = 21/9

21/9 : 7/9 = 21/9 * 9/7 = 3

1/7 + 1/70 + 1/700 = 100/700 + 10/700 + 1/700 = 111/700

111/700 : 111/700 = 1

3 - 1 = 2

2^n = 8 = 2^3

n = 3