-3(u+9)+21geq5(2-u) eching

$$- 3 ( u + 9 ) + 21 \geq 5 ( 2 - u )$$

u uchun yechish

$$u\geq 8$$

Yechim qadamlari

-3 ga u+9 ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$-3u-27+21\geq 5\left(2-u\right)$$

-6 olish uchun -27 va 21'ni qo'shing.

$$-3u-6\geq 5\left(2-u\right)$$

5 ga 2-u ni ko'paytirish orqali distributiv xususiyatdan foydalanish.

$$-3u-6\geq 10-5u$$

5u ni ikki tarafga qo’shing.

$$-3u-6+5u\geq 10$$

2u ni olish uchun -3u va 5u ni birlashtirish.

$$2u-6\geq 10$$

6 ni ikki tarafga qo’shing.

$$2u\geq 10+6$$

16 olish uchun 10 va 6'ni qo'shing.

$$2u\geq 16$$

Ikki tarafini 2 ga bo‘ling. 2 musbat bo‘lgani uchun, tengsizlik yo‘nalishi o‘zgarmaydi.

$$u\geq \frac{16}{2}$$

8 ni olish uchun 16 ni 2 ga bo‘ling.

$$u\geq 8$$