用加减消元法解：3（x-1）=y+5,5（y-1）=3（x+5）正确答案是y=7，x=5...就差这一道了。写完才可以go to bed

用加减消元法解方程：1-0.3(y-2)=（x+1）/5①(y-1)/4=(4x-3)/20-0.4②用加减消元法解方程! 用加减消元法解方程组 3(x-1)=y+5 2(y+1)=x+1 {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 加减消元法解方程3X（X-1）=Y+5 5(Y-1)=3(X+5) 用加减消元法解方程组{4x-5y=5,2x+3y=-25 {3x+5y=3,3x-3y=11用加减消元法解 用加减消元法解：4x—3y=14 5x+3y=31 用加减消元法解方程组{3x+2y=5 2x-3y=8 用加减消元法解方程组x-3y=-8 5x-4y=25 6x-4y=37 3x+4y=-5 用加减消元法解方程组 用加减消元法解X-Y=0 3X+5Y=32 用代入消元法和加减消元法解：x+y=7 5x+3y=31 用加减消元法解方程组3x+4y=14,5x-6y=36 {6x-5y=3 6x+y=-15 用加减消元法解方程 加减消元法解方程组：{3x-7y=1 {5x-4y=17 加减消元法解方程组：4x-y=9,3x+5y=1