1/2div5/8+1/4*3/5 eching

$$\frac { 1 } { 2 } \div \frac { 5 } { 8 } + \frac { 1 } { 4 } \times \frac { 3 } { 5 }$$

Baholash

$$\frac{19}{20}=0,95$$

Yechim qadamlari

\frac{1}{2} ni \frac{5}{8} ga bo'lish \frac{1}{2} ga k'paytirish \frac{5}{8} ga qaytarish.

$$\frac{1}{2}\times \frac{8}{5}+\frac{1}{4}\times \frac{3}{5}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{2} ni \frac{8}{5} ga ko‘paytiring.

$$\frac{1\times 8}{2\times 5}+\frac{1}{4}\times \frac{3}{5}$$

\frac{1\times 8}{2\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{8}{10}+\frac{1}{4}\times \frac{3}{5}$$

\frac{8}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{4}{5}+\frac{1}{4}\times \frac{3}{5}$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali \frac{1}{4} ni \frac{3}{5} ga ko‘paytiring.

$$\frac{4}{5}+\frac{1\times 3}{4\times 5}$$

\frac{1\times 3}{4\times 5} kasridagi ko‘paytirishlarni bajaring.

$$\frac{4}{5}+\frac{3}{20}$$

5 va 20 ning eng kichik umumiy karralisi 20 ga teng. \frac{4}{5} va \frac{3}{20} ni 20 maxraj bilan kasrlarga aylantirib oling.

$$\frac{16}{20}+\frac{3}{20}$$

\frac{16}{20} va \frac{3}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{16+3}{20}$$

19 olish uchun 16 va 3'ni qo'shing.

$$\frac{19}{20}$$

Omil

$$\frac{19}{2 ^ {2} \cdot 5} = 0,95$$