we are given
![y-7=-(x+1)](https://tex.z-dn.net/?f=y-7%3D-%28x%2B1%29)
Firstly, we will distribute negative sign on right side
![y-7=-x-1](https://tex.z-dn.net/?f=y-7%3D-x-1)
Since, we have to move both x and y on anyone side
so, we will add x on both sides
![y-7+x=-x-1+x](https://tex.z-dn.net/?f=y-7%2Bx%3D-x-1%2Bx)
![y-7+x=-1](https://tex.z-dn.net/?f=y-7%2Bx%3D-1)
now, we add 7 on both sides
![y-7+x+7=-1+7](https://tex.z-dn.net/?f=y-7%2Bx%2B7%3D-1%2B7)
![y+x=6](https://tex.z-dn.net/?f=y%2Bx%3D6)
.................Answer
You need to add them all up
Ok I’ll follow you but I’m not active on it
Answer: frist goes to second. Second goes to the third. Thrid goes to the frist.
Step-by-step explanation:
Answer:
I guess 21 is your answers.