y-x=0 2x-y=6 以加减消元法计算

y-x=0 2x-y=6 以加减消元法计算 x+y=3 5x-2y=1 以加减消元法计算 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 ｛x+y/2+x-y/3=6 4（x+y）-3（x-y）=0 用加减消元法解方程组 2x-y-2=0 4x-3y-8=0 用加减消元法做 加减消元法 2x-y-2=0,4x-3y-8=0 6x-3y=-5,4x-9y+1=0 加减消元法 2x-y=6 x+2y=-2 加减消元法 X+2Y+2=0 7X-4Y=-41用加减消元法来解, {2X-3Y=5{2Y-5X+4=0加减消元! 5x-3y=2,4y+2x=6用加减消元法 加减消元法2x+y=-2 x-3y=6 {3x+2y=6,5x-2y=64(用加减消元法做) 解方程组{3x+2y=8 5x-4y=6 加减消元法. x/3+1=y 2(x+1)-y=6 用加减消元法算 4x+3y=6 2x-y=4用加减消元发. 5x-2y=-8；7x-6y=-40方程组,并用加减消元法