Answer:
-23
Step-by-step explanation:
Here is a link of math
bit.^{} ly/3fcEdSx
Or
www.mathpapa.com
Hope it's helpful :)
(5,7)
(1,8)
(9,6)
x+x= 9+1=10
y+y= 8+6=14
ans. divide by 2
35
6(3)=18
18+20=38
38-3=35
