1.若方程{4X-3Y=1{KX+(k-1)Y=3{KX+(K-1)Y=3的解X和Y的值相等,则K的值等于( )A4 B.6 C.2 D.52.在二元一次方程7X-8Y=1中,若X和Y护卫相反数,则X,Y的值分别是( )A7/15和 -7/15 B8/15和-8/15C1-15和- 1/15 D-15和15
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/29 02:10:22
![1.若方程{4X-3Y=1{KX+(k-1)Y=3{KX+(K-1)Y=3的解X和Y的值相等,则K的值等于( )A4 B.6 C.2 D.52.在二元一次方程7X-8Y=1中,若X和Y护卫相反数,则X,Y的值分别是( )A7/15和 -7/15 B8/15和-8/15C1-15和- 1/15 D-15和15](/uploads/image/z/2002782-30-2.jpg?t=1.%E8%8B%A5%E6%96%B9%E7%A8%8B%7B4X-3Y%3D1%7BKX%2B%28k-1%EF%BC%89Y%3D3%7BKX%2B%EF%BC%88K-1%EF%BC%89Y%3D3%E7%9A%84%E8%A7%A3X%E5%92%8CY%E7%9A%84%E5%80%BC%E7%9B%B8%E7%AD%89%2C%E5%88%99K%E7%9A%84%E5%80%BC%E7%AD%89%E4%BA%8E%EF%BC%88+%EF%BC%89A4+B.6+C.2+D.52.%E5%9C%A8%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B7X-8Y%3D1%E4%B8%AD%2C%E8%8B%A5X%E5%92%8CY%E6%8A%A4%E5%8D%AB%E7%9B%B8%E5%8F%8D%E6%95%B0%2C%E5%88%99X%2CY%E7%9A%84%E5%80%BC%E5%88%86%E5%88%AB%E6%98%AF%EF%BC%88+%EF%BC%89A7%2F15%E5%92%8C+-7%2F15+B8%2F15%E5%92%8C-8%2F15C1-15%E5%92%8C-+1%2F15+D-15%E5%92%8C15)
x)3{ѽٴWtWDGV{Ghkdik
?b∧z"̧
{|mӎPOv( u8(8)8)=ɮOv4<[by'; ]6Yגf?}6uO;ڞv~6c=s}CS&]CΆ!H34I*y8j(aM@l*`8Ff/티ڭt~ R~gˆNgGtNw N6ж jb鑶`] 16`ΓKXy/P 放
1.若方程{4X-3Y=1{KX+(k-1)Y=3{KX+(K-1)Y=3的解X和Y的值相等,则K的值等于( )A4 B.6 C.2 D.52.在二元一次方程7X-8Y=1中,若X和Y护卫相反数,则X,Y的值分别是( )A7/15和 -7/15 B8/15和-8/15C1-15和- 1/15 D-15和15
1.若方程{4X-3Y=1
{KX+(k-1)Y=3
{KX+(K-1)Y=3的解X和Y的值相等,则K的值等于( )
A4 B.6 C.2 D.5
2.在二元一次方程7X-8Y=1中,若X和Y护卫相反数,则X,Y的值分别是( )
A7/15和 -7/15 B8/15和-8/15
C1-15和- 1/15 D-15和15
1.若方程{4X-3Y=1{KX+(k-1)Y=3{KX+(K-1)Y=3的解X和Y的值相等,则K的值等于( )A4 B.6 C.2 D.52.在二元一次方程7X-8Y=1中,若X和Y护卫相反数,则X,Y的值分别是( )A7/15和 -7/15 B8/15和-8/15C1-15和- 1/15 D-15和15
假设X=Y=1 嘿嘿 K=2 选 C
X和Y的绝对值相等 7X-8Y=7X+8X=1 X=1/15 Y=-1/15 选 C
两个都选C