(1/2+2/5):(1-1/10) eching

$$( \frac { 1 } { 2 } + \frac { 2 } { 5 } ) : ( 1 - \frac { 1 } { 10 } )$$

Baholash

$$1$$

Yechim qadamlari

2 va 5 ning eng kichik umumiy karralisi 10 ga teng. \frac{1}{2} va \frac{2}{5} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{5}{10}+\frac{4}{10}}{1-\frac{1}{10}}$$

\frac{5}{10} va \frac{4}{10} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{5+4}{10}}{1-\frac{1}{10}}$$

9 olish uchun 5 va 4'ni qo'shing.

$$\frac{\frac{9}{10}}{1-\frac{1}{10}}$$

1 ni \frac{10}{10} kasrga o‘giring.

$$\frac{\frac{9}{10}}{\frac{10}{10}-\frac{1}{10}}$$

\frac{10}{10} va \frac{1}{10} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{\frac{9}{10}}{\frac{10-1}{10}}$$

9 olish uchun 10 dan 1 ni ayirish.

$$\frac{\frac{9}{10}}{\frac{9}{10}}$$

1 ni olish uchun \frac{9}{10} ni \frac{9}{10} ga bo‘ling.

$$1$$

Omil

$$1$$