-9x+4y=72 eching

$$- 9 x + 4 y = 72$$

x uchun yechish

$$x=\frac{4\left(y-18\right)}{9}$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

Ikkala tarafdan 4y ni ayirish.

$$-9x=72-4y$$

Ikki tarafini -9 ga bo‘ling.

$$\frac{-9x}{-9}=\frac{72-4y}{-9}$$

-9 ga bo'lish -9 ga ko'paytirishni bekor qiladi.

$$x=\frac{72-4y}{-9}$$

72-4y ni -9 ga bo'lish.

$$x=\frac{4y}{9}-8$$

y uchun yechish

$$y=\frac{9\left(x+8\right)}{4}$$

Chiziqli tenglamalarni yechish bo'yicha qadamlar

9x ni ikki tarafga qo’shing.

$$4y=72+9x$$

Tenglama standart shaklda.

$$4y=9x+72$$

Ikki tarafini 4 ga bo‘ling.

$$\frac{4y}{4}=\frac{9x+72}{4}$$

4 ga bo'lish 4 ga ko'paytirishni bekor qiladi.

$$y=\frac{9x+72}{4}$$

72+9x ni 4 ga bo'lish.

$$y=\frac{9x}{4}+18$$