7/4+27/15+9/20 eching

$$\frac { 7 } { 4 } + \frac { 27 } { 15 } + \frac { 9 } { 20 }$$

Baholash

$$4$$

Yechim qadamlari

\frac{27}{15} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{7}{4}+\frac{9}{5}+\frac{9}{20}$$

4 va 5 ning eng kichik umumiy karralisi 20 ga teng. \frac{7}{4} va \frac{9}{5} ni 20 maxraj bilan kasrlarga aylantirib oling.

$$\frac{35}{20}+\frac{36}{20}+\frac{9}{20}$$

\frac{35}{20} va \frac{36}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{35+36}{20}+\frac{9}{20}$$

71 olish uchun 35 va 36'ni qo'shing.

$$\frac{71}{20}+\frac{9}{20}$$

\frac{71}{20} va \frac{9}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{71+9}{20}$$

80 olish uchun 71 va 9'ni qo'shing.

$$\frac{80}{20}$$

4 ni olish uchun 80 ni 20 ga bo‘ling.

$$4$$

Omil

$$2^{2}$$