Question

if 9 A B -6 are in arithmetic progression then a + b = ​

Answer 1

Step-by-step explanation:

they are in ap

therefore, d = a-9

also , d = -6-b

by comparing those equations

a-9 = -6-b

a+b = -6 +9

a+b = 3

HOPE IT HELPS

PLZ MARK AS BRAINLIEST

Answer 2

hey mate this is ur answer...

9,a,b,−6 are in A.P.

a−9=b−a=−6−b

by a−9=−6−b

a+b=3

hope this helps u..