Question

а-8 и а+10 при а=12,а=20,а=28,а=43.

Answer 1

12-8=4
20-8=12
28-8=20
43-8=35
12+10=22
20+10=30
28+10=38
43+10=53

Answer 2

12 - 8 = 4, 20 - 8 = 12, 28 - 8 = 20, 43 - 8 = 35.
12 + 10=22, 20+10=30, 28+10=38, 43+10=53.