If 18 a b, -3 e are in AP the a + b the equal to Question If 18 a b, -3 e are in AP the a + b the equal to in progress 0 Math Sadie 1 month 2021-08-16T12:51:00+00:00 2021-08-16T12:51:00+00:00 1 Answer 0 views 0

## Answers ( )

Answer:ANSWER IS 15

Step-by-step explanation:tn = a + (n-1)d

t4 = 18 + 3d = – 3

3d = – 21

d = – 7

So, the AP is 18, 11, 4, – 3, – 10

So, a + b = 11 + 4 = 15