4^3-7+3/21-1/6 eching

$$4 ^ { 3 } - 7 + \frac { 3 } { 21 } - \frac { 1 } { 6 }$$

Baholash

$$\frac{2393}{42}\approx 56,976190476$$

Yechim qadamlari

3 daraja ko‘rsatkichini 4 ga hisoblang va 64 ni qiymatni oling.

$$64-7+\frac{3}{21}-\frac{1}{6}$$

57 olish uchun 64 dan 7 ni ayirish.

$$57+\frac{3}{21}-\frac{1}{6}$$

\frac{3}{21} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$57+\frac{1}{7}-\frac{1}{6}$$

57 ni \frac{399}{7} kasrga o‘giring.

$$\frac{399}{7}+\frac{1}{7}-\frac{1}{6}$$

\frac{399}{7} va \frac{1}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{399+1}{7}-\frac{1}{6}$$

400 olish uchun 399 va 1'ni qo'shing.

$$\frac{400}{7}-\frac{1}{6}$$

7 va 6 ning eng kichik umumiy karralisi 42 ga teng. \frac{400}{7} va \frac{1}{6} ni 42 maxraj bilan kasrlarga aylantirib oling.

$$\frac{2400}{42}-\frac{7}{42}$$

\frac{2400}{42} va \frac{7}{42} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{2400-7}{42}$$

2393 olish uchun 2400 dan 7 ni ayirish.

$$\frac{2393}{42}$$

Omil

$$\frac{2393}{2 \cdot 3 \cdot 7} = 56\frac{41}{42} = 56,976190476190474$$