Question

0,(6) x 3xn-1/12 ÷ 0,5p2 = 40/9
Urgent dau coroana + 30 de p​

Answer 1

Răspuns:

n = 7

Explicație pas cu pas:

$0,(6) \times \frac{3n - 1}{12} ÷ (0,5)^{2} = 4 \frac{4}{9} \\ \frac{6}{9} \times \frac{3n - 1}{12} \div (\frac{1}{2})^{2} = \frac{40}{9} \\ \frac{3n - 1}{18} \times 4 = \frac{40}{9} \\ 3n - 1 = \frac{40 \times 18}{9 \times 4} \\ 3n - 1 =20 \\ 3n = 21 = > n = 7$