1/2:(1/4+1/3)= eching

$$\frac { 1 } { 2 } : ( \frac { 1 } { 4 } + \frac { 1 } { 3 } ) =$$

Baholash

$$\frac{6}{7}\approx 0,857142857$$

Yechim qadamlari

4 va 3 ning eng kichik umumiy karralisi 12 ga teng. \frac{1}{4} va \frac{1}{3} ni 12 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{1}{2}}{\frac{3}{12}+\frac{4}{12}}$$

\frac{3}{12} va \frac{4}{12} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{1}{2}}{\frac{3+4}{12}}$$

7 olish uchun 3 va 4'ni qo'shing.

$$\frac{\frac{1}{2}}{\frac{7}{12}}$$

\frac{1}{2} ni \frac{7}{12} ga bo'lish \frac{1}{2} ga k'paytirish \frac{7}{12} ga qaytarish.

$$\frac{1}{2}\times \frac{12}{7}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{2} ni \frac{12}{7} ga ko‘paytiring.

$$\frac{1\times 12}{2\times 7}$$

\frac{1\times 12}{2\times 7} kasridagi ko‘paytirishlarni bajaring.

$$\frac{12}{14}$$

\frac{12}{14} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{6}{7}$$

Omil

$$\frac{2 \cdot 3}{7} = 0,8571428571428571$$