Question

Помогите срочно!!!!!!!

Answer 1

$\displaystyle\bf\\\frac{x}{y} =b\\\\\\\frac{y}{z} =\frac{1}{b} \\\\\\\frac{x}{z}=?\\\\\\\frac{x}{y}\cdot \frac{y}{z} =b\cdot \frac{1}{b} \\\\\\\boxed{\frac{x}{z} =1}$