Question

O valor da expressão é ...

Answer 1

Olá,

$\frac{1 + \frac{1}{1 + 1} }{1 + \frac{1}{1 + \frac{1}{1 + 1} } } \\ \\\frac{1 + \frac{1}{2} }{1 + \frac{1}{1 + \frac{1}{2} } } \\\\ \frac{ \frac{3}{2} }{1 + \frac{1}{ \frac{3}{2} } } \\\\ \frac{ \frac{3}{2} }{1 + 1 \div \frac{3}{2} } \\\\ \frac{ \frac{3}{2} }{1 + 1 \times \frac{2}{3} } \\\\ \frac{ \frac{3}{2} }{1 + \frac{2}{3} } \\ \\\frac{ \frac{3}{2} }{ \frac{5}{3} } \\\\ \frac{3 \times 3}{2 \times 5} \\\\ \frac{9}{10}$

Letra B