6.若方程组{4x+3y=14 kx+(k-1)y=6的解中x与y的值相等,则k的值为()A.4 B.3 C.2 D.17.若{4x+5y=5 5x+4y=7,则x+y的值是()A.12 B.-2 C.4/3 D.3/48.若关于x,y的二元一次方程组{x+y=5k x-y=9k的解也是二元一次方程2x+3y=6
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![6.若方程组{4x+3y=14 kx+(k-1)y=6的解中x与y的值相等,则k的值为()A.4 B.3 C.2 D.17.若{4x+5y=5 5x+4y=7,则x+y的值是()A.12 B.-2 C.4/3 D.3/48.若关于x,y的二元一次方程组{x+y=5k x-y=9k的解也是二元一次方程2x+3y=6](/uploads/image/z/1759374-54-4.jpg?t=6.%E8%8B%A5%E6%96%B9%E7%A8%8B%E7%BB%84%7B4x%2B3y%3D14+kx%2B%28k-1%29y%3D6%E7%9A%84%E8%A7%A3%E4%B8%ADx%E4%B8%8Ey%E7%9A%84%E5%80%BC%E7%9B%B8%E7%AD%89%2C%E5%88%99k%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%88%EF%BC%89A.4+B.3+C.2+D.17.%E8%8B%A5%7B4x%2B5y%3D5+5x%2B4y%3D7%2C%E5%88%99x%2By%E7%9A%84%E5%80%BC%E6%98%AF%EF%BC%88%EF%BC%89A.12+B.-2+C.4%2F3+D.3%2F48.%E8%8B%A5%E5%85%B3%E4%BA%8Ex%2Cy%E7%9A%84%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%BB%84%7Bx%2By%3D5k+x-y%3D9k%E7%9A%84%E8%A7%A3%E4%B9%9F%E6%98%AF%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B2x%2B3y%3D6)
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6.若方程组{4x+3y=14 kx+(k-1)y=6的解中x与y的值相等,则k的值为()A.4 B.3 C.2 D.17.若{4x+5y=5 5x+4y=7,则x+y的值是()A.12 B.-2 C.4/3 D.3/48.若关于x,y的二元一次方程组{x+y=5k x-y=9k的解也是二元一次方程2x+3y=6
6.若方程组{4x+3y=14 kx+(k-1)y=6的解中x与y的值相等,则k的值为()
A.4 B.3 C.2 D.1
7.若{4x+5y=5 5x+4y=7,则x+y的值是()
A.12 B.-2 C.4/3 D.3/4
8.若关于x,y的二元一次方程组{x+y=5k x-y=9k的解也是二元一次方程2x+3y=6的解,则k的值为()
A.-3/4 B.3/4 C.4/3 D.-4/3
6.若方程组{4x+3y=14 kx+(k-1)y=6的解中x与y的值相等,则k的值为()A.4 B.3 C.2 D.17.若{4x+5y=5 5x+4y=7,则x+y的值是()A.12 B.-2 C.4/3 D.3/48.若关于x,y的二元一次方程组{x+y=5k x-y=9k的解也是二元一次方程2x+3y=6
6C
7C
8B
C.C.B
C
6:C,7:C,8:B。
1、C
2、C
3、B