方程组1:x+2y=150 4x+3y=300 方程组2:4[x+2]=1-5y 3[y+2]=3-2x 方程组3:5x
方程组x-2y=8,3x-4y=5,x=?,y=?
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
方程组1:x+2y=150 4x+3y=300 方程组2:4[x+2]=1-5y 3[y+2]=3-2x 方程组3:5x
换元法解方程组3/x+y+2/x-y=17/5 2/x+y-5/x-y=1
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
一道二元一次方程组!3(x+y)-4(x-y)=4,(x+y)/2+(x-y)/6=1