解方程组 1.3(x+y)-4(x-y)=4,x+y/2 + x-y/6 =1 2.5x+4y+z=0,3x+y-4z=11,x+y+z=-2

解方程组（x/4）-（1/3y）=1.3x+4y=12 解方程组{4x+8(x+y)=480,4y+9(x+y)=480 解方程组：｛4x+5(x-y)=30,4y-3(x-y)=6 解方程组x-4y=-1x-4y=-12x+y=16 解方程组｛ 3x-4y(x-y)=3 { 2x-3y=1 解方程组,x+y/2=3x-2y=10+6x+y/4, 方程组4=x+y,8=3x-y求x,y的解 解方程组x+y/3=x-y/4 2x+3y=11 解方程组3x+5(x+y)=2 3y-2(x+y)=4 解方程组 1.3(x+y)-4(x-y)=4,x+y/2 + x-y/6 =1 2.5x+4y+z=0,3x+y-4z=11,x+y+z=-2 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2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16 解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk 3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组 解方程组3(x+y)-4(x-y)=4,x+y除以2+x-y除以6=1 解方程组：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27