-5-21/2=quad71/2-15/2 eching

$$- 5 - 2 \frac { 1 } { 2 } = \quad 7 \frac { 1 } { 2 } - \frac { 15 } { 2 }$$

Tasdiqlamoq

Yechim qadamlari

Tenglamaning ikkala tarafini 2 ga ko'paytirish.

$$-10-\left(2\times 2+1\right)=7\times 2+1-15$$

4 hosil qilish uchun 2 va 2 ni ko'paytirish.

$$-10-\left(4+1\right)=7\times 2+1-15$$

5 olish uchun 4 va 1'ni qo'shing.

$$-10-5=7\times 2+1-15$$

-15 olish uchun -10 dan 5 ni ayirish.

$$-15=7\times 2+1-15$$

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

$$-15=14+1-15$$

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

$$-15=15-15$$

0 olish uchun 15 dan 15 ni ayirish.

$$-15=0$$

-15 va 0 ni taqqoslang.

$$\text{false}$$