x+y=3.6 4x+6y=11.3 怎么解
5x+4y=22 4x+y=3y+x 怎么解
怎么解二元一次方程组2(x-y)/3-x+y/4=-1和6(x+y)-4(2x-y)=16
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
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
{4/(x+y)+6/(x-y)=3 {9/(x-y)-1/(x+y)=1
4x+3y=6① 2x+y=4②怎么解
5x+4y=6 2x+3y=1二元一次方程怎么解
3x+4y=6 2x+3y=5 这题怎么解
{2x+y=6,4x+3y=27方程组怎么解
3x+4y=16 5x-6y=33 怎么解