（x+6)+3y+18=132

（x+6)+3y+18=132 (计算方程组x+y)/2=6-(x-y)/3,6(x+y)-5(x-y)=18 初二上学期方程题 4x+y=5 5x+4y=63x-2y=1 2x+3y=13x-2y=7 7x+5y=32x+3y=17 2x-y=-4x+5y=6 2x+y=23x-6y=4 3x+2y=52x+y=73x-4y=53x+y=1x-2y=-1x+y=42x+3y=92x-3y=74x+5y=3x+y=20004x+6y=90003x+5y=113x-2y=42x+3y=215x-2y=5x+y=54x+3y=182x+3y=16x+4y=132x+3y=40x 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= 若7x+6(x-y)=-4,3x-4(y-x)=18,则x-y=__ x+y/2+x-y/3=6,4(x+y)-3(x-y)=-20 {(x+y)/2+(x-y)/3=6 4(x+y)-3(x-y)=-20 4(x+y)-3(x-y)=-20,2/x+y+3/x-y=6 2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51 {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 x+y/2+x-y/6=5 2(x+y)-3(x-y)=-2 6(x-y)-2(x+y)=14 3(x-y)+(x+y)=5 （x+y）/2- x-y/2=6 3(x+y)=4(x-y) x+y/3+x-y/2=6 4(x+y)-2(x-y)=40 若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 6(x+y)的平方-11(x+y)(x-y)+3(x-y)的平方=? 分式 (11 18:8:17)已知x/y=2,求x·x-x·y+3y·y/x·x+x·y+6y·y的值 x+y/2+ x-y/2=6 2(x+y)-3x+3y=24 求X Y