{x/2+y/3=1,x+y=3,用加减消元法解

｛x/3+y/4=1 x/3-y/2=1 用加减消元法解方程组 用加减消元法解方程组3x-2y=1 2x+3y=-7 {x/2+y/3=1,x+y=3,用加减消元法解 用加减消元法解方程组 3(x-1)=y+5 2(y+1)=x+1 x/3+1=y 2(x+1)-y=6 用加减消元法算 ｛x-2y=9 ｛3x-2y=-1 （用加减消元法） {4x-3y=5,2y-4x=1用加减消元法解 {4x-3y=5,2y-4x=1用加减消元法解 x+y/2+x-y/3=6,4(x+y)-5(x-y)=2用加减消元法解方程组 用加减消元法解三分之x+y+二分之x-y=6,3(x+y)-2(x-y)=28 3x+2y=1,4x-2y=13 用加减消元法解 求x与y 3x+2y=1,4x-2y=13 用加减消元法解 求x与y {x-y=3 2x+3(x-y)=11 用加减消元法解方程组 ｛x-y=3 2x+3(x-y)=11 用加减消元法解方程组 ｛2(x-y)=3(x+y) 2x+y=8 加减消元法 用加减消元法解二元一次方程组：①[(x+y)/2]+[(x-y)/3]=5②[(x+y)/2]+[(x-y)/3]=-1 具体一点! 解方程组2分之x+y+3分之x-y=-5 2分之x+y-3分之x-y=-1用加减消元法做 分式加减的几道题目求速度1 .(x+y)²/（x-z)(y-z) - (y+z)²/（x-z)(y-z) = 2.2x+3y/x-y+2y/y-x-3y/x-y=