3(-2/15)-3/10 eching

$$3 ( - \frac { 2 } { 15 } ) - \frac { 3 } { 10 }$$

Baholash

$$-\frac{7}{10}=-0,7$$

Yechim qadamlari

3\left(-\frac{2}{15}\right) ni yagona kasrga aylantiring.

$$\frac{3\left(-2\right)}{15}-\frac{3}{10}$$

-6 hosil qilish uchun 3 va -2 ni ko'paytirish.

$$\frac{-6}{15}-\frac{3}{10}$$

\frac{-6}{15} ulushini 3 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$-\frac{2}{5}-\frac{3}{10}$$

5 va 10 ning eng kichik umumiy karralisi 10 ga teng. -\frac{2}{5} va \frac{3}{10} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{4}{10}-\frac{3}{10}$$

-\frac{4}{10} va \frac{3}{10} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-4-3}{10}$$

-7 olish uchun -4 dan 3 ni ayirish.

$$-\frac{7}{10}$$

Omil

$$-\frac{7}{10} = -0,7$$