15-1215/18 eching

$$15-12 \frac{ 15 }{ 18 }$$

Baholash

$$\frac{13}{6}\approx 2,166666667$$

Yechim qadamlari

216 hosil qilish uchun 12 va 18 ni ko'paytirish.

$$15-\frac{216+15}{18}$$

231 olish uchun 216 va 15'ni qo'shing.

$$15-\frac{231}{18}$$

\frac{231}{18} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$15-\frac{77}{6}$$

15 ni \frac{90}{6} kasrga o‘giring.

$$\frac{90}{6}-\frac{77}{6}$$

\frac{90}{6} va \frac{77}{6} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{90-77}{6}$$

13 olish uchun 90 dan 77 ni ayirish.

$$\frac{13}{6}$$

Omil

$$\frac{13}{2 \cdot 3} = 2\frac{1}{6} = 2,1666666666666665$$