10/21*7/20div5/6+1/4 eching

$$\frac { 10 } { 21 } \times \frac { 7 } { 20 } \div \frac { 5 } { 6 } + \frac { 1 } { 4 }$$

Baholash

$$\frac{9}{20}=0,45$$

Yechim qadamlari

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{10}{21} ni \frac{7}{20} ga ko‘paytiring.

$$\frac{\frac{10\times 7}{21\times 20}}{\frac{5}{6}}+\frac{1}{4}$$

\frac{10\times 7}{21\times 20} kasridagi ko‘paytirishlarni bajaring.

$$\frac{\frac{70}{420}}{\frac{5}{6}}+\frac{1}{4}$$

\frac{70}{420} ulushini 70 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{\frac{1}{6}}{\frac{5}{6}}+\frac{1}{4}$$

\frac{1}{6} ni \frac{5}{6} ga bo'lish \frac{1}{6} ga k'paytirish \frac{5}{6} ga qaytarish.

$$\frac{1}{6}\times \frac{6}{5}+\frac{1}{4}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{6} ni \frac{6}{5} ga ko‘paytiring.

$$\frac{1\times 6}{6\times 5}+\frac{1}{4}$$

Surat va maxrajdagi ikkala 6 ni qisqartiring.

$$\frac{1}{5}+\frac{1}{4}$$

5 va 4 ning eng kichik umumiy karralisi 20 ga teng. \frac{1}{5} va \frac{1}{4} ni 20 maxraj bilan kasrlarga aylantirib oling.

$$\frac{4}{20}+\frac{5}{20}$$

\frac{4}{20} va \frac{5}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{4+5}{20}$$

9 olish uchun 4 va 5'ni qo'shing.

$$\frac{9}{20}$$

Omil

$$\frac{3 ^ {2}}{2 ^ {2} \cdot 5} = 0,45$$