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受欢迎的代数 >

x/(10)+y/5-1=0, x/8+y/6 =2

解答

\frac{x}{10} + \frac{y}{5} - 1 = 0, \frac{x}{8} + \frac{y}{6} = 2

解答

x = 28, y = - 9

求解步骤

[\frac{x}{10} + \frac{y}{5} - 1 = 0 \frac{x}{8} + \frac{y}{6} = 2]

对于

\frac{x}{10} + \frac{y}{5} - 1 = 0

将

x

移到一边:

x = - 2 y + 10

替代

x = - 2 y + 10

[\frac{- 2 y + 10}{8} + \frac{y}{6} = 2]

化简

[\frac{- y + 15}{12} = 2]

对于

\frac{- y + 15}{12} = 2

将

y

移到一边:

y = - 9

对于

x = - 2 y + 10

替代

y = - 9

x = - 2 (- 9) + 10

- 2 (- 9) + 10 = 28

x = 28

方程组的解为:

x = 28, y = - 9

作图

流行的例子

2x+3y=9,-x+y=-2

2 x + 3 y = 9, - x + y = - 2

2 x - y = 0, x + y = 15

8^x=2^{y+1},5^y=25^{x+1}

8^{x} = 2^{y + 1}, 5^{y} = 2 5^{x + 1}

5x_{1}+7x_{2}=3,2x_{1}+4x_{2}=1

5 x_{1} + 7 x_{2} = 3, 2 x_{1} + 4 x_{2} = 1

2y-x=-9,7y-2x=3

2 y - x = - 9, 7 y - 2 x = 3