2(x-y)/3-x+y/4=-1 6(x+y)-4(2x-y)=16 解这个方程组 .希望能帮我
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 00:56:50
2(x-y)/3-x+y/4=-1 6(x+y)-4(2x-y)=16 解这个方程组 .希望能帮我
2(x-y)/3-x+y/4=-1 6(x+y)-4(2x-y)=16 解这个方程组
.希望能帮我
2(x-y)/3-x+y/4=-1 6(x+y)-4(2x-y)=16 解这个方程组 .希望能帮我
2(x-y)/3-x+y/4=-1,两边同乘以12并整理,得:4x+5y=12 .记为1式
6(x+y)-4(2x-y)=16,去括号并整理,得:-x+5y=8 .记为2式
1式-2式,得:5x=4,x=4/5
把x=4/5代入2式,得:-4/5+5y=8,5y=8+4/5,y=44/25
风雨兼程 学海同舟 有事说话
y=44/9,x=-28/9
{3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1
解二元一次方程组:3(x+y)-4(x-y)=4,x+y/2+x-y/6+1x+y/2+x-y/6+1=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
(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
2(x+y)-3(x-y)=1 6(x+y)+(x-y)=51
{x+y=1 ,xy=-6{x(2x-3)=0,y=x²-1{(3x+4y-3)(3x+4y+3)=0,3x+2y=5{(x-y+2)(x+y)=0,x²+y²=8{(x+y)((x+y-1)=0,(x-y)(x-y-1)=0
x+y+2(-x-y+1)=3(1-y-x)-4-(y+x-1),x+y=?
[(3x+4y)]^2-3x(3x+4y)]/(--6y),其中x=1,y=3
2(x-y)/3-(x+y)/4=-1 (1) 6(x+y)-4(2x-y)=16 (2)
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
2(X-Y)/3=(X+Y)/4 -1 6(X+Y)=4(2X-Y)+16解方程
6(x+y)=4(2x-y)+16,2(x-y)/3=x+y/4-1
2(x-y)/3—x+y/4=1 6(x+y)—4(2x-y)=16
2(x-y)/3-(x+y)/4=-1 3(x+y)-2(x-y)=6过程