方程组(1) 3x+4y=0 5x-6y=33 (2)4x+5y+0=0 3x-2y=3

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) 3x+4y=0 5x-6y=33 (2)4x+5y+0=0 3x-2y=3 方程组2x-3y+1/2+3x-2y-3=1 x+2y+6/4-4x+2y-2/5=0 解方程组：｛4x+5(x-y)=30,4y-3(x-y)=6 方程组x²-y²-3x+5y=0,x-y-1=0 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 解方程组：﹛x-y=5,解方程组：﹛6x=5z=25,3x-y=-1.3z=4z=20.解方程组：﹛x/2-y+1/3=1,3x+2y=10.已知（x-2y-1)²+l 2x+y-7 l =0,求x、y的值. 解二元一次方程组3(x+y)-4(x-y)=4 x+y/2+x-y/6=1 解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16 解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk 解方程组3(x+y)-4(x-y)=4,x+y除以2+x-y除以6=1 解方程组：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16 一道二元一次方程组!3(x+y)-4(x-y)=4,(x+y)/2+(x-y)/6=1 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解二元一次方程组{x+y/2+x-y/3=6,4(x+y)-2=5(x-y) 解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组