x-y+2z=4 eching

$$x-y+2z=4$$

x uchun yechish

$$x=y-2z+4$$

Yechim qadamlari

y ni ikki tarafga qo’shing.

$$x+2z=4+y$$

Ikkala tarafdan 2z ni ayirish.

$$x=4+y-2z$$

y uchun yechish

$$y=x+2z-4$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Ikkala tarafdan x ni ayirish.

$$-y+2z=4-x$$

Ikkala tarafdan 2z ni ayirish.

$$-y=4-x-2z$$

Tenglama standart shaklda.

$$-y=4-2z-x$$

Ikki tarafini -1 ga bo‘ling.

$$\frac{-y}{-1}=\frac{4-2z-x}{-1}$$

-1 ga bo'lish -1 ga ko'paytirishni bekor qiladi.

$$y=\frac{4-2z-x}{-1}$$

4-x-2z ni -1 ga bo'lish.

$$y=x+2z-4$$