解方程组2X+3Y=4 -4X-6Y=-8并给出几何解释

解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 解方程组X+Y/2=3X-2Y=10+6X+Y/4 下面给出三个方程组x+2y=3 2x+3y=4 ,2x+3y=4 5x+6y=7 ,3x+4y=5 ,56x+57y=5 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)/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 解二元一次方程组：3(x+y)-4(x-y)=4,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 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12