-2/3*2+13/2 eching

$$- \frac { 2 } { 3 } \times 2 + \frac { 13 } { 2 }$$

Baholash

$$\frac{31}{6}\approx 5,166666667$$

Yechim qadamlari

-\frac{2}{3}\times 2 ni yagona kasrga aylantiring.

$$\frac{-2\times 2}{3}+\frac{13}{2}$$

-4 hosil qilish uchun -2 va 2 ni ko'paytirish.

$$\frac{-4}{3}+\frac{13}{2}$$

\frac{-4}{3} kasri manfiy belgini olib tashlash bilan -\frac{4}{3} sifatida qayta yozilishi mumkin.

$$-\frac{4}{3}+\frac{13}{2}$$

3 va 2 ning eng kichik umumiy karralisi 6 ga teng. -\frac{4}{3} va \frac{13}{2} ni 6 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{8}{6}+\frac{39}{6}$$

-\frac{8}{6} va \frac{39}{6} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-8+39}{6}$$

31 olish uchun -8 va 39'ni qo'shing.

$$\frac{31}{6}$$

Omil

$$\frac{31}{2 \cdot 3} = 5\frac{1}{6} = 5,166666666666667$$