Question

If 18, a, b, −3 are in AP then find a + b.​

Answer 1

Answer:

18 + -3

Step-by-step explanation:

a=18,b= -3 then +18 + -3 =

+15

Answer 2

✿.｡.:* ☆:**:. ANSWER : .:**:.☆*.:｡.✿

GIVEN :

18, a , b , -3 are in AP .

TO FIND :

a + b

SOLUTION:

If t1 ,t2 ,t3 ,t4 are terms of AP ,,,

The common difference, d =

$d = t2 - t1$

From this formula ,,,

We can interpret,

d = > t2 - t1 = t4 - t3

a - 18 = -3 - b

a + b = 18 - 3

a + b = 15