5.5x+1.5y=16 1.5x+5.5y=19
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/05 01:45:25
![5.5x+1.5y=16 1.5x+5.5y=19](/uploads/image/z/2519167-31-7.jpg?t=5.5x%2B1.5y%3D16+1.5x%2B5.5y%3D19)
5.5x+1.5y=16 1.5x+5.5y=19
5.5x+1.5y=16 1.5x+5.5y=19
5.5x+1.5y=16 1.5x+5.5y=19
5.5x+1.5y=16(1)
1.5x+5.5y=19(2)
(1)+(2)得7x+7y=35,即x+y=5(3)
(1)-(2)得4x-4y=-3,即x-y=-0.75(4)
(3)+(4)得2x=4.25,即x=2.125
(3)-(4)得2y=5.75,即y=2.875
所以方程组解为x=2.125,y=2.875
5.5x+1.5y=16 (1)
1.5x+5.5y=19(2)
(1)+(2)得:7x+7y=35
x+y=5(4)
(1)-(4)*1.5得:4x=8.5,x=2.125
所以y=5-2.125=2.875
所以方程组的解为x=2.125,y=2.875
写出来给你好呀
y+19=x x=1.5y 求x?
shuxue数学.1.5x+12y=360 7x+16y=500求x 2.x+y=36y-x=28求x
5.5x+1.5y=16 1.5x+5.5y=19
(x-y)(x-2y)+(x-2y)(x-7y),其中X=4,Y=1.5
[3x^2-(x+y)(y-x)][2(-x-y)(y-x)+2x^2+3y^2],其中x=-2分之1,y=1.5
化简:【(x-y)的2次方+(x+y)(x-y)】除以2x,其中x=3,y=1.5
先化简,后求值:[(x-y)²+(x+y)(x-y)]÷2x,其中x=3,y=1.5
[(x-y)²+(x+y)(x-y)]/2xx=3,y=-1.5
已知x+y=-4试计算多项式0.5(x+y)+4(x-y)-3(x-y)-1.5(x+y)-x+y的值
(1题1分 解题思路清晰 有题号)先给五分作为奖励1.{x+y=35 2.{x+y=48 3.{x+y=1.5 4.{x+y=20 5.{6x+15y=3602x+4y=94 10x+12y=520 15x+5y=20 x-y=16 8x+10y=4406.{x+y=200 7.{x+y=6 8.{3x+4y=108 9.{4x+5y=98 10.{x+y=35y=2x-1 3x-3y=6 2x+3y=76 5y
1.5X+Y=12.8 x=?y=?
x+y=150 1.5x+1.1y=50
x+y=50 1.5x+1.1y=50
x+y+4.5=12.82x+1.5y=15
1.5x+3.5y=150.X Y是多少
1.5x=3.9y求x:y
化简求值 [(x-y^2)+(x+y)(x-y)]÷2x.[(x-y^2)+(x+y)(x-y)]÷2x.化简求值 x=3 y=1.5
1.5(x+y)+3(x-y)=27(x+y)-3(x-y)=-62.x-y/7 - x+y/10 =1/22(x-y)-5(x+y)=3所谓细节决定成败,