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受欢迎的代数 >

x/3+y/4 =6,+x/6+y/2 =6

解答

\frac{x}{3} + \frac{y}{4} = 6, + \frac{x}{6} + \frac{y}{2} = 6

解答

x = 12, y = 8

求解步骤

[\frac{x}{3} + \frac{y}{4} = 6 \frac{x}{6} + \frac{y}{2} = 6]

对于

\frac{x}{3} + \frac{y}{4} = 6

将

x

移到一边:

x = 18 - \frac{3 y}{4}

替代

x = 18 - \frac{3 y}{4}

[\frac{18 - \frac{3 y}{4}}{6} + \frac{y}{2} = 6]

化简

[\frac{24 + 3 y}{8} = 6]

对于

\frac{24 + 3 y}{8} = 6

将

y

移到一边:

y = 8

对于

x = 18 - \frac{3 y}{4}

替代

y = 8

x = 18 - \frac{3 \cdot 8}{4}

18 - \frac{3 \cdot 8}{4} = 12

x = 12

方程组的解为:

x = 12, y = 8

作图

流行的例子

2x+y=31,3y-x=23

2 x + y = 31, 3 y - x = 23

4x+6y=-1,10x+18y=14

4 x + 6 y = - 1, 10 x + 18 y = 14

x/(10)+y/5+1=1,5 x/8+y/6 =15

\frac{x}{10} + \frac{y}{5} + 1 = 1, 5 \frac{x}{8} + \frac{y}{6} = 15

(1) x = 7, 3 x + y = 25

2x-3y=-15,3x-4y=-18

2 x - 3 y = - 15, 3 x - 4 y = - 18