解方程组8x-5y=6 7x-3y=6

解联立方程组 x/x+y=5/8 x/x+y+6=2/3 解方程组8x-5y=6 7x-3y=6 8X+3Y+2=0 6X+5Y+7=0 解方程组 用加减法解方程组：8x+3y+2=0,6x+5y+7=0；(方程组) 解方程组：｛4x+5(x-y)=30,4y-3(x-y)=6 y-3x=2,y-5x=4,y-7x=6,y-9x=8,y-11x=0方程组,无 解二元一次方程组(x+3)(y+5)=(x+1)(y+8),(2x-3)(5y+7)=2(5x-6)(y+1) 解方程组6(x-y)-7(x+y)=21 2(x-y)-5(x+y)=-1 解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组 解方程组﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组8/(x+y) +(x-y)/2=3,6/(x+y)-(x-y)/4=1 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解二元一次方程组{x+y/2+x-y/3=6,4(x+y)-2=5(x-y) 解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2 解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4 解方程组：x+y/2+x-y/3=6 4(x+y)-5(x-y)=12 解方程组：3(x+y)+2(x-y)=11,6(x+y)-5(x-y)=13.