若x+y+4z=10,4x+4y+z=15,则x+y+z的值是
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/25 06:35:51
若x+y+4z=10,4x+4y+z=15,则x+y+z的值是若x+y+4z=10,4x+4y+z=15,则x+y+z的值是若x+y+4z=10,4x+4y+z=15,则x+y+z的值是x+y+4z=
若x+y+4z=10,4x+4y+z=15,则x+y+z的值是
若x+y+4z=10,4x+4y+z=15,则x+y+z的值是
若x+y+4z=10,4x+4y+z=15,则x+y+z的值是
x+y+4z=10
4x+4y+z=15
两式相加
5x+5y+5z=25
5(x+y+z)=25
x+y+z=5
不懂的欢迎追问~
5x+5y+5z=25
x+y+z=3
x+y+4z=10,4x+4y+z=15
相加得
5(x+y+z)=25
x+y+z=5
.
x+y+z
=(x+y+4z+4x+4y+z)÷5
=(10+15)÷5
=5
把两个式子相加,得到5X+5Y+5Z=25
等式两边同时除以5,就得到X+Y+Z=5
x+y+4z=10 扩大四倍4x+4y+16z=40 再减去4x+4y+z=15,Z=5/3. 4x+4y+z=15的两边同时加上3个z 为4x+4y+4z=15+5=20 化简为x+y+z=5
(1式+2式)除以5
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-z)=
2x+z=10 x+y-z=4 3x-y-z=0
若X+6Y+4Z=10 4X+4Y+Z=15求X+Y+Z
若实数XYZ满足2|x-y|+√2y+z+z方-z+1//4=0 求X+Y+Z 2y+z在根号里
4x+y+z=-3 2x+3y-4z=-10 x+2y-z=-1
若3x+7y+z=5,4x+10y+z=3,则x+y+z=?
3x+2y+z=4 x+y+z=10 2x+3y-z=1
2x+3y+z=8 4x-y-z=10 x+2y-z=1
已知x::y:z=3:4:5,(1)求x+y分之z的值;(2)若x+y+z=6,求x,y,z.
(4x-2y-z)-{5x-[8y-2z-(x-2y)]-x-(3y-10z)}=?
若x,y,z成等差数列,则(z-x)^2-4(x-y)(y-x)=
2|X-Y|+√2Y+Z+Z²-Z+1/4=0求X+Y+Z的值
x-z=-4 z-2y=-1 x+y-z=-1 怎么解
x-y-z=0 4x+8y+z=17 z=1
x+y/2=z+x/3=y+z/4 x+y+z=27
x-4y+z=-302x+y-z=18x--y-z=7
14x+4y+z=200,x+y+z=100求解x,y,z
x+2y=3x+2z=4y+z 求x:y:z