zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的代数 >

6x+3y=15,4x-9y=-34

解答

6 x + 3 y = 15, 4 x - 9 y = - 34

解答

x = \frac{1}{2}, y = 4

求解步骤

[6 x + 3 y = 15 4 x - 9 y = - 34]

对于

6 x + 3 y = 15

将

x

移到一边:

x = \frac{5 - y}{2}

替代

x = \frac{5 - y}{2}

[4 \cdot \frac{5 - y}{2} - 9 y = - 34]

化简

[- 11 y + 10 = - 34]

对于

- 11 y + 10 = - 34

将

y

移到一边:

y = 4

对于

x = \frac{5 - y}{2}

替代

y = 4

x = \frac{5 - 4}{2}

化简

x = \frac{1}{2}

方程组的解为:

x = \frac{1}{2}, y = 4

作图

流行的例子

3x+2(y+1)=2,4x-3(y-2)=23

3 x + 2 (y + 1) = 2, 4 x - 3 (y - 2) = 23

n(u)=10,0n(a)=4,5n(b)=3,4n(a^0b)=15

n (u) = 10, 0 n (a) = 4, 5 n (b) = 3, 4 n (a^{0} b) = 15

13x-6y=20,7x+4y=18

13 x - 6 y = 20, 7 x + 4 y = 18

2a+b=-1,3a-4b=15

2 a + b = - 1, 3 a - 4 b = 15

5x+3y=18,3x-y=2

5 x + 3 y = 18, 3 x - y = 2