5/12+2/8+21/9) eching

$$\frac { 5 } { 12 } + \frac { 2 } { 8 } + \frac { 21 } { 9 } )$$

Baholash

$$3$$

Yechim qadamlari

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

$$\frac{5}{12}+\frac{1}{4}+\frac{21}{9}$$

12 va 4 ning eng kichik umumiy karralisi 12 ga teng. \frac{5}{12} va \frac{1}{4} ni 12 maxraj bilan kasrlarga aylantirib oling.

$$\frac{5}{12}+\frac{3}{12}+\frac{21}{9}$$

\frac{5}{12} va \frac{3}{12} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{5+3}{12}+\frac{21}{9}$$

8 olish uchun 5 va 3'ni qo'shing.

$$\frac{8}{12}+\frac{21}{9}$$

\frac{8}{12} ulushini 4 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{2}{3}+\frac{21}{9}$$

\frac{21}{9} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{2}{3}+\frac{7}{3}$$

\frac{2}{3} va \frac{7}{3} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{2+7}{3}$$

9 olish uchun 2 va 7'ni qo'shing.

$$\frac{9}{3}$$

3 ni olish uchun 9 ni 3 ga bo‘ling.

$$3$$

Omil

$$3$$