(2/3-3/4)*(3/5-1/2)= eching

$$( \frac { 2 } { 3 } - \frac { 3 } { 4 } ) \cdot ( \frac { 3 } { 5 } - \frac { 1 } { 2 } ) =$$

Baholash

$$-\frac{1}{120}\approx -0,008333333$$

Yechim qadamlari

3 va 4 ning eng kichik umumiy karralisi 12 ga teng. \frac{2}{3} va \frac{3}{4} ni 12 maxraj bilan kasrlarga aylantirib oling.

$$\left(\frac{8}{12}-\frac{9}{12}\right)\left(\frac{3}{5}-\frac{1}{2}\right)$$

\frac{8}{12} va \frac{9}{12} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{8-9}{12}\left(\frac{3}{5}-\frac{1}{2}\right)$$

-1 olish uchun 8 dan 9 ni ayirish.

$$-\frac{1}{12}\left(\frac{3}{5}-\frac{1}{2}\right)$$

5 va 2 ning eng kichik umumiy karralisi 10 ga teng. \frac{3}{5} va \frac{1}{2} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{1}{12}\left(\frac{6}{10}-\frac{5}{10}\right)$$

\frac{6}{10} va \frac{5}{10} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$-\frac{1}{12}\times \frac{6-5}{10}$$

1 olish uchun 6 dan 5 ni ayirish.

$$-\frac{1}{12}\times \frac{1}{10}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali -\frac{1}{12} ni \frac{1}{10} ga ko‘paytiring.

$$\frac{-1}{12\times 10}$$

\frac{-1}{12\times 10} kasridagi ko‘paytirishlarni bajaring.

$$\frac{-1}{120}$$

\frac{-1}{120} kasri manfiy belgini olib tashlash bilan -\frac{1}{120} sifatida qayta yozilishi mumkin.

$$-\frac{1}{120}$$

Omil

$$-\frac{1}{120} = -0,008333333333333333$$