Question

Seja, entao é?
a.0
b.4
c.11/2
d.7
e.10​

Answer 1

$\frac{1}{x + 3} = \frac{2}{7} \\ x + 3 = \frac{7}{2} \\ 2x + 6 = 7 \\ 2x = 7 - 6$

$2x = 1 \\ x = \frac{1}{2}$

$\frac{22}{x + 5} = \frac{22}{ \frac{1}{2} + 5 } = \frac{22}{ \frac{11}{2} }$

$22. \frac{2}{11} = 4$

Alternativa b