7div8+2div9-104div12 eching

$$7 \div 8+2 \div 9-104 \div 12$$

Baholash

$$-\frac{545}{72}\approx -7,569444444$$

Yechim qadamlari

8 va 9 ning eng kichik umumiy karralisi 72 ga teng. \frac{7}{8} va \frac{2}{9} ni 72 maxraj bilan kasrlarga aylantirib oling.

$$\frac{63}{72}+\frac{16}{72}-\frac{104}{12}$$

\frac{63}{72} va \frac{16}{72} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{63+16}{72}-\frac{104}{12}$$

79 olish uchun 63 va 16'ni qo'shing.

$$\frac{79}{72}-\frac{104}{12}$$

\frac{104}{12} ulushini 4 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{79}{72}-\frac{26}{3}$$

72 va 3 ning eng kichik umumiy karralisi 72 ga teng. \frac{79}{72} va \frac{26}{3} ni 72 maxraj bilan kasrlarga aylantirib oling.

$$\frac{79}{72}-\frac{624}{72}$$

\frac{79}{72} va \frac{624}{72} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{79-624}{72}$$

-545 olish uchun 79 dan 624 ni ayirish.

$$-\frac{545}{72}$$

Omil

$$-\frac{545}{72} = -7\frac{41}{72} = -7,569444444444445$$