(3/8-7/4+2/16= eching

$$( \frac { 3 } { 8 } - \frac { 7 } { 4 } + \frac { 2 } { 16 } =$$

Baholash

$$-\frac{5}{4}=-1,25$$

Yechim qadamlari

8 va 4 ning eng kichik umumiy karralisi 8 ga teng. \frac{3}{8} va \frac{7}{4} ni 8 maxraj bilan kasrlarga aylantirib oling.

$$\frac{3}{8}-\frac{14}{8}+\frac{2}{16}$$

\frac{3}{8} va \frac{14}{8} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{3-14}{8}+\frac{2}{16}$$

-11 olish uchun 3 dan 14 ni ayirish.

$$-\frac{11}{8}+\frac{2}{16}$$

\frac{2}{16} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{11}{8}+\frac{1}{8}$$

-\frac{11}{8} va \frac{1}{8} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-11+1}{8}$$

-10 olish uchun -11 va 1'ni qo'shing.

$$\frac{-10}{8}$$

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

$$-\frac{5}{4}$$

Omil

$$-\frac{5}{4} = -1\frac{1}{4} = -1,25$$