解方程组4x-2y=-5.6 7x+4y=-5.2这么多答案那个是真的啊.....

解方程组x+y/2+x-y/2=7,4(x+y)-5(x-y)=2... 解方程组 x+y/5+x-y/2=7 4(x+y)-5(x-y)=2 解方程组8y+5x=84y-3x=7 方程组 因式分解 4x^3-4x^2y-(x-y) 解方程组 3x-5y=7 4x+2y=5解方程组3x-5y=74x+2y=5 解方程组解方程组｛y=2x-7｛x+y+z=1｛3x-z=4 解方程组,x+y/2=3x-2y=10+6x+y/4, 解方程组3x+5(x+y)=2 3y-2(x+y)=4 解方程组｛ 3x-4y(x-y)=3 { 2x-3y=1 解方程组x+y/3=x-y/4 2x+3y=11 解方程组(x+y)(x-2y)=-5 (x-y)(x+2y)=7 用代入法解此方程组：（x+y)/2+(x-y)/3=6 4(x+y)-5(x-y)=2求方程组的正整数解：x+y+z=7 2x+3y+4z=20 解方程组2(x-y)/3-x+y/4=-1 6(x-y)-4(2x-y)=16 解方程组：2(x-y)/3-x+y/4=-1 ,6(x+y)-4(2x-y)=16 解方程组24/(x+y) +24/(x-y) = 7/3 ,8/(x+y) +18/(x-y) = 4/3 解方程组x^2-y^2=x+y 4x^2-y^2+2x-y=0过程 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