1/3+(-1/5)-1+2/3 eching

$$\frac { 1 } { 3 } + ( - \frac { 1 } { 5 } ) - 1 + \frac { 2 } { 3 }$$

Baholash

$$-\frac{1}{5}=-0,2$$

Yechim qadamlari

3 va 5 ning eng kichik umumiy karralisi 15 ga teng. \frac{1}{3} va \frac{1}{5} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$\frac{5}{15}-\frac{3}{15}-1+\frac{2}{3}$$

\frac{5}{15} va \frac{3}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{5-3}{15}-1+\frac{2}{3}$$

2 olish uchun 5 dan 3 ni ayirish.

$$\frac{2}{15}-1+\frac{2}{3}$$

1 ni \frac{15}{15} kasrga o‘giring.

$$\frac{2}{15}-\frac{15}{15}+\frac{2}{3}$$

\frac{2}{15} va \frac{15}{15} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{2-15}{15}+\frac{2}{3}$$

-13 olish uchun 2 dan 15 ni ayirish.

$$-\frac{13}{15}+\frac{2}{3}$$

15 va 3 ning eng kichik umumiy karralisi 15 ga teng. -\frac{13}{15} va \frac{2}{3} ni 15 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{13}{15}+\frac{10}{15}$$

-\frac{13}{15} va \frac{10}{15} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-13+10}{15}$$

-3 olish uchun -13 va 10'ni qo'shing.

$$\frac{-3}{15}$$

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

$$-\frac{1}{5}$$

Omil

$$-\frac{1}{5} = -0,2$$