Question

2 supra x egal 1 supra 7 supra 2

Answer 1

$\frac{2}{x}=\frac{\frac{1}{7}}{2}\\ \frac{2}{x}=\frac{1}{7}*\frac{1}{2} \\ \frac{2}{x}=\frac{1}{14} \\ Facem~produsul~mezilor~cu~cel~al~extremilor: \\ x=2*14 \\ \boxed{x=28}$