解方程组:2x+2Y=30,2X+4Y=44
解方程组:2x+2Y=30,2X+4Y=44
解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7
解方程组X+Y/2=3X-2Y=10+6X+Y/4
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
解方程组x+y/3=x-y/4 2x+3y=11
解方程组:(0.2x+0.1y)/2- (4x-y)/10=(x-y)/5+ (3x+0.5y)/30 (3x+2y-1
解方程组x^2-y^2=x+y 4x^2-y^2+2x-y=0过程
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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
3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组