Answer:
m(a + 6, b - 3)
Explanation:
(a + 2, b - 5) and (a + 10, b - 1)
((a + 2) + (a + 10))/2
(2a + 12)/2
a + 6
((b - 5) + (b - 1))/2
(2b - 6)/2
b - 3
9.4m questions
12.2m answers