解方程组 x=3y-6 0.8(x+y)=x+y-13.6

解方程组 x=3y-6 0.8(x+y)=x+y-13.6 解方程组（三分之x+y）+y=6,3(x+y)-y=24 解方程组：｛4x+5(x-y)=30,4y-3(x-y)=6 解方程组,x+y/2=3x-2y=10+6x+y/4, 解方程组(1-0.8)(x+y)=13.2 x=3y-6 解方程组;x+y/2=x-y/3=6 4(x+y)-3(x-y)=-20 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⑴(x+y)/2-(x-y)/3=6,⑵3(x+y)=4(x-y) 3/x+y+2/x-y=6,3（x+y)-2(x-y)=28解这个方程组 解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 解方程组4（x+y)-3(x-y)=14;(x+y)/2+(x+y)/3=6 2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解方程组 解方程组 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2 解方程组﹛2(x+y)-3(x-y)=1 6(x+y)+7(x-y)=51 解二元一次方程组3(x+y)-4(x-y)=4 x+y/2+x-y/6=1 解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16 解方程组3(x+y)-4(x-y)=4和(x+y)/2+(x-y)/6=1kkkkkkkk 3(x+y)—4(x-y)=4,(x+y/2)+(x-y/6)=1.解方程组