122/9-813/15= eching

$$12 \frac { 2 } { 9 } - 8 \frac { 13 } { 15 } =$$

Baholash

$$\frac{151}{45}\approx 3,355555556$$

Yechim qadamlari

108 hosil qilish uchun 12 va 9 ni ko'paytirish.

$$\frac{108+2}{9}-\frac{8\times 15+13}{15}$$

110 olish uchun 108 va 2'ni qo'shing.

$$\frac{110}{9}-\frac{8\times 15+13}{15}$$

120 hosil qilish uchun 8 va 15 ni ko'paytirish.

$$\frac{110}{9}-\frac{120+13}{15}$$

133 olish uchun 120 va 13'ni qo'shing.

$$\frac{110}{9}-\frac{133}{15}$$

9 va 15 ning eng kichik umumiy karralisi 45 ga teng. \frac{110}{9} va \frac{133}{15} ni 45 maxraj bilan kasrlarga aylantirib oling.

$$\frac{550}{45}-\frac{399}{45}$$

\frac{550}{45} va \frac{399}{45} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{550-399}{45}$$

151 olish uchun 550 dan 399 ni ayirish.

$$\frac{151}{45}$$

Omil

$$\frac{151}{3 ^ {2} \cdot 5} = 3\frac{16}{45} = 3,3555555555555556$$