(-7/20+1/10):(-3) eching

$$( \frac { - 7 } { 20 } + \frac { 1 } { 10 } ) : ( - 3 )$$

Baholash

$$\frac{1}{12}\approx 0,083333333$$

Yechim qadamlari

\frac{-7}{20} kasri manfiy belgini olib tashlash bilan -\frac{7}{20} sifatida qayta yozilishi mumkin.

$$\frac{-\frac{7}{20}+\frac{1}{10}}{-3}$$

20 va 10 ning eng kichik umumiy karralisi 20 ga teng. -\frac{7}{20} va \frac{1}{10} ni 20 maxraj bilan kasrlarga aylantirib oling.

$$\frac{-\frac{7}{20}+\frac{2}{20}}{-3}$$

-\frac{7}{20} va \frac{2}{20} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{\frac{-7+2}{20}}{-3}$$

-5 olish uchun -7 va 2'ni qo'shing.

$$\frac{\frac{-5}{20}}{-3}$$

\frac{-5}{20} ulushini 5 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{-\frac{1}{4}}{-3}$$

\frac{-\frac{1}{4}}{-3} ni yagona kasrga aylantiring.

$$\frac{-1}{4\left(-3\right)}$$

-12 hosil qilish uchun 4 va -3 ni ko'paytirish.

$$\frac{-1}{-12}$$

Ikkala surat va maxrajdan manfiy belgini olib tashlash bilan \frac{-1}{-12} kasrini \frac{1}{12} ga soddalashtirish mumkin.

$$\frac{1}{12}$$

Omil

$$\frac{1}{2 ^ {2} \cdot 3} = 0,08333333333333333$$