-71/2-31/2= eching

$$- 7 \frac { 1 } { 2 } - 3 \frac { 1 } { 2 } =$$

Baholash

$$-11$$

Yechim qadamlari

14 hosil qilish uchun 7 va 2 ni ko'paytirish.

$$-\frac{14+1}{2}-\frac{3\times 2+1}{2}$$

15 olish uchun 14 va 1'ni qo'shing.

$$-\frac{15}{2}-\frac{3\times 2+1}{2}$$

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

$$-\frac{15}{2}-\frac{6+1}{2}$$

7 olish uchun 6 va 1'ni qo'shing.

$$-\frac{15}{2}-\frac{7}{2}$$

-\frac{15}{2} va \frac{7}{2} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{-15-7}{2}$$

-22 olish uchun -15 dan 7 ni ayirish.

$$\frac{-22}{2}$$

-11 ni olish uchun -22 ni 2 ga bo‘ling.

$$-11$$

Omil

$$-11$$