2/3-7/2quad1/13 eching

$$\frac { 2 } { 3 } - \frac { 7 } { 2 } \quad \frac { 1 } { 13 }$$

Baholash

$$\frac{31}{78}\approx 0,397435897$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{7}{2} ni \frac{1}{13} ga ko‘paytiring.

$$\frac{2}{3}-\frac{7\times 1}{2\times 13}$$

\frac{7\times 1}{2\times 13} kasridagi ko‘paytirishlarni bajaring.

$$\frac{2}{3}-\frac{7}{26}$$

3 va 26 ning eng kichik umumiy karralisi 78 ga teng. \frac{2}{3} va \frac{7}{26} ni 78 maxraj bilan kasrlarga aylantirib oling.

$$\frac{52}{78}-\frac{21}{78}$$

\frac{52}{78} va \frac{21}{78} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{52-21}{78}$$

31 olish uchun 52 dan 21 ni ayirish.

$$\frac{31}{78}$$

Omil

$$\frac{31}{2 \cdot 3 \cdot 13} = 0,3974358974358974$$