解方程组(x/12)+(y/16)=2 (x/12)-(y/16)=1
解方程组{x+2y=16,x-3/4-y-3/3=1/12
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
解方程组:(x+3)(y-2)=(x-3)(y+10),(x+1)(y+3)=(x-2)(y+12)
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
解方程组:x+y/2+x-y/3=6 4(x+y)-5(x-y)=12
解方程组(1)2x+3y=12 ,2x+y=0 (2)x+y=7,3(x+y)-7y=7
解方程组x+1/3=2y 3(x+1)-y=16
解方程组,x-2y=1,2x+3y=16 帮帮
用代入法解方程组 2x+3y=12 x-2y=-1
解二元一次方程组X:Y:Z=1:2:3,X+Y+Z=12
解方程组 x+2y=1.5,12(x+y)+15y=20