Question

If 18, a, b, -3 are in A. P,then find a+b

Answer 1

Answer:

a+b = 15

Step-by-step explanation:

for numbers to be in A.P the common difference should be same

taking 18, a, b and -3 we get

a-18=-3-b

a+b = -3+18

a+b = 15

Answer 2

18, a, b, -3 are in A.P.

a - 18 = -3 - b ... (common difference)

a + b = -3 + 18

a + b = 15