5x+2y=17.5 8x+4y=32 方程组
5x+2y=17.5 8x+4y=32 方程组
方程组x-2y=8,3x-4y=5,x=?,y=?
已知方程组4x+2y=1,20x+8y,求x,y
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组
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