(4+74):42+152-1 eching

$$( 4 + 74 ) : 42 + 152 - 1$$

Baholash

$$\frac{1070}{7}\approx 152,857142857$$

Yechim qadamlari

78 olish uchun 4 va 74'ni qo'shing.

$$\frac{78}{42}+152-1$$

\frac{78}{42} ulushini 6 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{13}{7}+152-1$$

152 ni \frac{1064}{7} kasrga o‘giring.

$$\frac{13}{7}+\frac{1064}{7}-1$$

\frac{13}{7} va \frac{1064}{7} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{13+1064}{7}-1$$

1077 olish uchun 13 va 1064'ni qo'shing.

$$\frac{1077}{7}-1$$

1 ni \frac{7}{7} kasrga o‘giring.

$$\frac{1077}{7}-\frac{7}{7}$$

\frac{1077}{7} va \frac{7}{7} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{1077-7}{7}$$

1070 olish uchun 1077 dan 7 ni ayirish.

$$\frac{1070}{7}$$

Omil

$$\frac{2 \cdot 5 \cdot 107}{7} = 152\frac{6}{7} = 152,85714285714286$$