Tìm x: x : $\frac{1}{2}$ = $\frac{4}{5}$

Question

$\begin{array}{l} x : \frac{1}{2} = \frac{4}{5} \\ x = \frac{4}{5} \times \frac{1}{2} \\ x = \frac{4}{10} = \frac{2}{5} \end{array}$

Answer 1

Trả lời:

Giải bởi Vietjack

$\begin{array}{l} x : \frac{1}{2} = \frac{4}{5} \\ x = \frac{4}{5} \times \frac{1}{2} \\ x = \frac{4}{10} = \frac{2}{5} \end{array}$

Tìm x: x : 12 = 45