帮一个忙吧:解方程组:1-0.3(y-2)=x+1/5,y-3/4=4x+9/20=-1.5
帮一个忙吧:解方程组:1-0.3(y-2)=x+1/5,y-3/4=4x+9/20=-1.5
解方程组:1-0.3(y-2)=(x+1)/5,(y-3)/4=(4x+9)/20-1.5
解方程组{ 3x-4y(x-y)=3 { 2x-3y=1
2+3x/5+4y=9,4+6y-y=1解方程组
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{4/x+y+6/x-y=3, 9/x-y-1/x+y=1
解方程组:{4/x+y+6/x-y=3 9/x-y-1/x+y=1}
解方程组:2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16
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
解二元一次方程组{3(x+y)-(x-y)=4,x+y/2+x-y/6=1
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1