1/4+4/5/frac{1{8}+1/2} eching

$$\frac { \frac { 1 } { 4 } + \frac { 4 } { 5 } } { \frac { 1 } { 8 } + \frac { 1 } { 2 } }$$

Baholash

$$\frac{42}{25}=1,68$$

Yechim qadamlari

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

$$\frac{\frac{5}{20}+\frac{16}{20}}{\frac{1}{8}+\frac{1}{2}}$$

\frac{5}{20} va \frac{16}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{5+16}{20}}{\frac{1}{8}+\frac{1}{2}}$$

21 olish uchun 5 va 16'ni qo'shing.

$$\frac{\frac{21}{20}}{\frac{1}{8}+\frac{1}{2}}$$

8 va 2 ning eng kichik umumiy karralisi 8 ga teng. \frac{1}{8} va \frac{1}{2} ni 8 maxraj bilan kasrlarga aylantirib oling.

$$\frac{\frac{21}{20}}{\frac{1}{8}+\frac{4}{8}}$$

\frac{1}{8} va \frac{4}{8} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{21}{20}}{\frac{1+4}{8}}$$

5 olish uchun 1 va 4'ni qo'shing.

$$\frac{\frac{21}{20}}{\frac{5}{8}}$$

\frac{21}{20} ni \frac{5}{8} ga bo'lish \frac{21}{20} ga k'paytirish \frac{5}{8} ga qaytarish.

$$\frac{21}{20}\times \frac{8}{5}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{21}{20} ni \frac{8}{5} ga ko‘paytiring.

$$\frac{21\times 8}{20\times 5}$$

\frac{21\times 8}{20\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{168}{100}$$

\frac{168}{100} ulushini 4 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{42}{25}$$

Omil

$$\frac{2 \cdot 3 \cdot 7}{5 ^ {2}} = 1\frac{17}{25} = 1,68$$