谁会解10x+y=6(x+y)+3 10y+x=4(x+y)+9
解方程组 10(x-y)=3(x+y)+15 6(x+y)=4(2x-y)+16
{4/(x+y)+6/(x-y)=3 {9/(x-y)-1/(x+y)=1
解方程组X+Y/2=3X-2Y=10+6X+Y/4
二元一次方程:{3X=2Y,3X+4Y=36 {3X+4Y=10,4X+Y=9 {2X-Y=6,X+2Y=-2 {X+Y
用加减法解方程组:{(x+y)/6+(x-y)/10=3 (x+y)/6+(y-x)/10=-1
解方程组x+y/6+x-y/10=3,x+y/6+y-x/10=-1
解方程组 2x+y(y-2x)=9 (x+y)(x+y-3)=10
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}
(4x-2y-z)-{5x[8y-2y-(x+y)]-x+(3y-10z)]=? kuai
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20