解方程组:{4x+5(x-y)=30,4y-3(x-y)=6
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X+Y/2=3X-2Y=10+6X+Y/4
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:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组
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3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1
解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3
解方程组:{二分之x+y+二分之x-y=6,4(x+y)-5(x-y)=2()
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1