[(-2/3)+(-4/9)]*(-3/4) eching

$$[ ( - \frac { 2 } { 3 } ) + ( - \frac { 4 } { 9 } ) ] \times ( - \frac { 3 } { 4 } )$$

Baholash

$$\frac{5}{6}\approx 0,833333333$$

Yechim qadamlari

3 va 9 ning eng kichik umumiy karralisi 9 ga teng. -\frac{2}{3} va \frac{4}{9} ni 9 maxraj bilan kasrlarga aylantirib oling.

$$\left(-\frac{6}{9}-\frac{4}{9}\right)\left(-\frac{3}{4}\right)$$

-\frac{6}{9} va \frac{4}{9} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-6-4}{9}\left(-\frac{3}{4}\right)$$

-10 olish uchun -6 dan 4 ni ayirish.

$$-\frac{10}{9}\left(-\frac{3}{4}\right)$$

Suratni maxrajga va maxrajini suratga ko‘paytirish orqali -\frac{10}{9} ni -\frac{3}{4} ga ko‘paytiring.

$$\frac{-10\left(-3\right)}{9\times 4}$$

\frac{-10\left(-3\right)}{9\times 4} kasridagi ko‘paytirishlarni bajaring.

$$\frac{30}{36}$$

\frac{30}{36} ulushini 6 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{5}{6}$$

Omil

$$\frac{5}{2 \cdot 3} = 0,8333333333333334$$