解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/26 21:03:56
解方程组2x-3y=45x-3y=1y-1=3(x-2)y+4=2(x+1)解方程组2x-3y=45x-3y=1y-1=3(x-2)y+4=2(x+1)解方程组2x-3y=45x-3y=1y-1=3(
解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
解方程组 2x-3y=4 5x-3y=1 y-1=3(x-2) y+4=2(x+1)
2x-3y=4.1)
5x-3y=1.2)
2)-1),得3x=-3
x=-1.3)
将3)代入1),得-2-3y=4
-3y=6
y=-2
所以,x=-1,y=-2;
y-1=3(x-2) .4)
y+4=2(x+1).5)
5)-4),得:5=-x+2+6
x=3.6)
将6)代入4),得:y-1=3
y=4
所以,x=3,y=4;
x=3 y=4
似乎任意两个即可求解
2x 3y=6 (1) 3x-2y=-2 (2) (1)x2 (2)x3得 x=6/13 y=22/13 先化简得 3x-y=8 (3) -3x 5y=20 (4) (3) (4)得 x=5 y=7
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
1/2x-2y=-74,x-6y=-12解方程组,x/5-y/2=2,2x+3y=4解方程组
3(x-y)+5(x-y)=19 4(x+y)-2(x-y)=-1解方程组是3(x+y)
解方程组{(x-2)(y+3)=(x+1)(y-1) {(x+1)(y+1)=(x-1)(y+5)
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 X+Y/2+X-Y/3=6 4[X+Y]-5[X-Y]=2
解二元一次方程组{x+y/2+x-y/3=6,4(x+y)-2=5(x-y)
解方程组2分之x+y+3分之x-y=6 4(x+y)-5(x-y)=2
解方程组 {(x+y)/2+(x-y)/3=6 5(x+y)-2(x-y)=4
3(x+y)+2(x-y)=36 4(x+y)-5(x-y)=2 解方程组
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
解方程组3(x+y)-4(x-y)=4,x+y除以2+x-y除以6=1
解方程组 3(x+y)-2(x-y)=9,5(x+y)+2(x-y)=-1
解方程组:{3(x+y)-2(x-y)=9,5(x+y)+2(x-y)=-1}
解方程组 {3(x+y)-4(x-y)=11 {2(x-y)+5(x+y)=27