解方程组2x-5y=9 5x+4y=6
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解方程组2x-5y=9 5x+4y=6
![解方程组2x-5y=9 5x+4y=6](/uploads/image/z/8341801-25-1.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%842x-5y%3D9+5x%2B4y%3D6)
2x-5y=9
5x+4y=6
8x-20y=36
25x+20y=30
33x=66
x=2
4-5y=9
5y=-5
y=-1
x=2
y=-1
5x+4y=6
8x-20y=36
25x+20y=30
33x=66
x=2
4-5y=9
5y=-5
y=-1
x=2
y=-1
解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4
解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解方程组:{二分之x+y+二分之x-y=6,4(x+y)-5(x-y)=2()
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
2+3x/5+4y=9,4+6y-y=1解方程组
解方程组2x-5y=9 5x+4y=6
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
解方程组:2/(x+y)+5/(x-y)=18 9/(x+y)-10/(y-x)=66
解方程组:2/(x+y)+5/(x-y)=18 9/(x+y)-10/(y-x)=66
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组