45*9-1/2*981*9 eching

$$45 \times 9 - \frac { 1 } { 2 } \cdot 981 \cdot 9$$

Baholash

$$-\frac{8019}{2}=-4009,5$$

Yechim qadamlari

405 hosil qilish uchun 45 va 9 ni ko'paytirish.

$$405-\frac{1}{2}\times 981\times 9$$

\frac{981}{2} hosil qilish uchun \frac{1}{2} va 981 ni ko'paytirish.

$$405-\frac{981}{2}\times 9$$

\frac{981}{2}\times 9 ni yagona kasrga aylantiring.

$$405-\frac{981\times 9}{2}$$

8829 hosil qilish uchun 981 va 9 ni ko'paytirish.

$$405-\frac{8829}{2}$$

405 ni \frac{810}{2} kasrga o‘giring.

$$\frac{810}{2}-\frac{8829}{2}$$

\frac{810}{2} va \frac{8829}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{810-8829}{2}$$

-8019 olish uchun 810 dan 8829 ni ayirish.

$$-\frac{8019}{2}$$

Omil

$$-\frac{8019}{2} = -4009\frac{1}{2} = -4009,5$$