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受欢迎的代数 >

4x+6y=-11,0x+18y=14

解答

4 x + 6 y = - 11, 0 x + 18 y = 14

解答

x = - \frac{47}{12}, y = \frac{7}{9}

求解步骤

[4 x + 6 y = - 11 0 \cdot x + 18 y = 14]

对于

4 x + 6 y = - 11

将

x

移到一边:

x = \frac{- 11 - 6 y}{4}

替代

x = \frac{- 11 - 6 y}{4}

[0 \cdot \frac{- 11 - 6 y}{4} + 18 y = 14]

化简

[18 y = 14]

对于

18 y = 14

将

y

移到一边:

y = \frac{7}{9}

对于

x = \frac{- 11 - 6 y}{4}

替代

y = \frac{7}{9}

x = \frac{- 11 - 6 \cdot \frac{7}{9}}{4}

\frac{- 11 - 6 \cdot \frac{7}{9}}{4} = - \frac{47}{12}

x = - \frac{47}{12}

方程组的解为:

x = - \frac{47}{12}, y = \frac{7}{9}

作图

流行的例子

16a-13b=-10,3a+5b=-8

16 a - 13 b = - 10, 3 a + 5 b = - 8

3 x + 2 y = 5, - y = - 7

43x+31y=167,31x+43y=203

43 x + 31 y = 167, 31 x + 43 y = 203

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

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

2a+b=4,-3a+b=-11

2 a + b = 4, - 3 a + b = - 11