{6x=5y.300+4x+100=4y.方程组
x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组
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 5(x+y)-2(x-y)=4
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解方程组4x+5y=3.5,x-1=1.8-x-6y
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x-2y=8,3x-4y=5,x=?,y=?
解方程组X+Y/2=3X-2Y=10+6X+Y/4
y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,
已知方程组:5x+y=3 ; ax+5y=4与方程组x
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16