方程组(3x-27)/6+(3x+2y)=1 （3x-2y)/6-(3y+2y)=5 求解!快!

解联立方程组 x/x+y=5/8 x/x+y+6=2/3 解方程组,x+y/2=3x-2y=10+6x+y/4, 已知方程组{2x+y=6,x-3y=1,不解方程组,求7y(x-3y)²-(3y-x)²的值.已知方程组{2x+y=6,{x-3y=1.不解方程组,求7y(x-3y)²-(3y-x)²的值.已知方程组{2x+y=6，{x-3y=1.不解方程组，求7y(x-3y)²-(3y-x)³ 数学问题方程组3分之x+y+2分之x-y=6 3（x+y)-2(x-y)=28方程组3分之x+y+2分之x-y=63（x+y)-2(x-y)=28 解方程组2x-y,3x-2y 解方程组 y=2x x+y=3 已知方程组2X+Y=6和X-3Y=1不解方程组,求7Y(X-3Y)^2-(3Y-X)^3 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27 解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27全过程、快 方程组2分之x+y+3分之x-y＝6,2（x+y)-3x+3y=24 解下面方程组,x+y/3+x-y/2=6 3(x+y)-2(x-y)=28, 3/x+y+2/x-y=6,3（x+y)-2(x-y)=28解这个方程组 2元一次方程组 2/x+y+3/x-y=6 4(x+y)-3(x-y)=-20 方程组{x+y/3+x-y/2=6,3(x+y)-2(x-y)=28 方程组 (3/X+Y)+2/(X-Y)=6 3(X+Y)-2(X-Y)=28 解方程组⑴(x+y)/2-(x-y)/3=6,⑵3(x+y)=4(x-y) 解方程组 x-y/3-x+y/4=2 x-y/6-x+y/8=3 解方程组;x+y/2=x-y/3=6 4(x+y)-3(x-y)=-20