1/2-1/2*(1/2-3/4)= eching

$$\frac { 1 } { 2 } - \frac { 1 } { 2 } \cdot ( \frac { 1 } { 2 } - \frac { 3 } { 4 } ) =$$

Baholash

$$\frac{5}{8}=0,625$$

Yechim qadamlari

2 va 4 ning eng kichik umumiy karralisi 4 ga teng. \frac{1}{2} va \frac{3}{4} ni 4 maxraj bilan kasrlarga aylantirib oling.

$$\frac{1}{2}-\frac{1}{2}\left(\frac{2}{4}-\frac{3}{4}\right)$$

\frac{2}{4} va \frac{3}{4} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{1}{2}-\frac{1}{2}\times \frac{2-3}{4}$$

-1 olish uchun 2 dan 3 ni ayirish.

$$\frac{1}{2}-\frac{1}{2}\left(-\frac{1}{4}\right)$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{2} ni -\frac{1}{4} ga ko‘paytiring.

$$\frac{1}{2}-\frac{1\left(-1\right)}{2\times 4}$$

\frac{1\left(-1\right)}{2\times 4} kasridagi ko‘paytirishlarni bajaring.

$$\frac{1}{2}-\frac{-1}{8}$$

\frac{-1}{8} kasri manfiy belgini olib tashlash bilan -\frac{1}{8} sifatida qayta yozilishi mumkin.

$$\frac{1}{2}-\left(-\frac{1}{8}\right)$$

-\frac{1}{8} ning teskarisi \frac{1}{8} ga teng.

$$\frac{1}{2}+\frac{1}{8}$$

2 va 8 ning eng kichik umumiy karralisi 8 ga teng. \frac{1}{2} va \frac{1}{8} ni 8 maxraj bilan kasrlarga aylantirib oling.

$$\frac{4}{8}+\frac{1}{8}$$

\frac{4}{8} va \frac{1}{8} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{4+1}{8}$$

5 olish uchun 4 va 1'ni qo'shing.

$$\frac{5}{8}$$

Omil

$$\frac{5}{2 ^ {3}} = 0,625$$