X= 5 x= -9 y = -10 if this not the answer reverse it
<u>ANSWER </u>
![x=3,y=6,z=-1](https://tex.z-dn.net/?f=x%3D3%2Cy%3D6%2Cz%3D-1)
<u>EXPLANATION</u>
We the have the equations,
![-x-y-z=-8](https://tex.z-dn.net/?f=-x-y-z%3D-8)
Multiplying through by negative one gives,
![x+y+z=8---(1)](https://tex.z-dn.net/?f=x%2By%2Bz%3D8---%281%29)
Also
![-4x+4y+5z=7---(2)](https://tex.z-dn.net/?f=-4x%2B4y%2B5z%3D7---%282%29)
and
![2x+2z=4](https://tex.z-dn.net/?f=2x%2B2z%3D4)
Dividing through by 2 gives
![x+z=2](https://tex.z-dn.net/?f=x%2Bz%3D2)
Making z the subject gives,
![z=2-x---(3)](https://tex.z-dn.net/?f=z%3D2-x---%283%29)
Now we substitute equation (3) into equation (1) and (2)
Equation (3) in to equation (1) gives,
![x+y+2-x=8](https://tex.z-dn.net/?f=x%2By%2B2-x%3D8)
This implies that;
![y=8-2](https://tex.z-dn.net/?f=y%3D8-2)
![y=6](https://tex.z-dn.net/?f=y%3D6)
We now put equation (3) in (2) to get,
![-4x+4y+5(2-x)=7](https://tex.z-dn.net/?f=-4x%2B4y%2B5%282-x%29%3D7)
This implies that
![-4x+4y+10-5x=7](https://tex.z-dn.net/?f=-4x%2B4y%2B10-5x%3D7)
![-9x+4y=7-10](https://tex.z-dn.net/?f=-9x%2B4y%3D7-10)
![-9x+4y=-3](https://tex.z-dn.net/?f=-9x%2B4y%3D-3)
But
![y=6](https://tex.z-dn.net/?f=y%3D6)
So,
![-9x+4(6)=-3](https://tex.z-dn.net/?f=-9x%2B4%286%29%3D-3)
![-9x+24=-3](https://tex.z-dn.net/?f=-9x%2B24%3D-3)
![-9x=-3-24](https://tex.z-dn.net/?f=-9x%3D-3-24)
![-9x=-27](https://tex.z-dn.net/?f=-9x%3D-27)
Dividing through by negative 9 gives
![x=3](https://tex.z-dn.net/?f=x%3D3)
and
![z=2-3](https://tex.z-dn.net/?f=z%3D2-3)
![z=-1](https://tex.z-dn.net/?f=z%3D-1)
Therefore ![x=3,y=6,z=-1](https://tex.z-dn.net/?f=x%3D3%2Cy%3D6%2Cz%3D-1)
I think the answer would be u= -5/8
Regrouping in subtraction means that if you can't subtract because the digit on the bottom has a greater value than the digit on the top (such as 3-6)m so in this case you would have to regroup twice.
Answer:
Just put the opposite coordinates on the other side of the segment and thats your answer!
Step-by-step explanation: