1.8+-18/5--61/10= eching

$$1.8 + \frac { - 18 } { 5 } - - 6 \frac { 1 } { 10 } =$$

Baholash

$$4,3$$

Yechim qadamlari

\frac{-18}{5} kasri manfiy belgini olib tashlash bilan -\frac{18}{5} sifatida qayta yozilishi mumkin.

$$1,8-\frac{18}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

1,8 o‘nlik raqamni uning \frac{18}{10} kasrga o‘giring. \frac{18}{10} ulushini 2 ni chiqarib, bekor qilish hisobiga eng past shartlarga kamaytiring.

$$\frac{9}{5}-\frac{18}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

\frac{9}{5} va \frac{18}{5} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{9-18}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

-9 olish uchun 9 dan 18 ni ayirish.

$$-\frac{9}{5}-\left(-\frac{6\times 10+1}{10}\right)$$

60 hosil qilish uchun 6 va 10 ni ko'paytirish.

$$-\frac{9}{5}-\left(-\frac{60+1}{10}\right)$$

61 olish uchun 60 va 1'ni qo'shing.

$$-\frac{9}{5}-\left(-\frac{61}{10}\right)$$

-\frac{61}{10} ning teskarisi \frac{61}{10} ga teng.

$$-\frac{9}{5}+\frac{61}{10}$$

5 va 10 ning eng kichik umumiy karralisi 10 ga teng. -\frac{9}{5} va \frac{61}{10} ni 10 maxraj bilan kasrlarga aylantirib oling.

$$-\frac{18}{10}+\frac{61}{10}$$

-\frac{18}{10} va \frac{61}{10} da bir xil maxraji bor, ularning suratini qo‘shish orqali qo‘shing.

$$\frac{-18+61}{10}$$

43 olish uchun -18 va 61'ni qo'shing.

$$\frac{43}{10}$$

Omil

$$\frac{43}{2 \cdot 5} = 4\frac{3}{10} = 4,3$$