Question

if an ap third term is 5 and 7 term is 9 then the common difference is​

Answer 1

Answer:

a+2d=5

a+6d=9

....simultaneous method

-4d=-4

d=-4/-4

d=1

Answer 2

Answer: The answer is 1.

Step-by-step explanation:

We have

A3 = a+(3-1)d =a+2d = 5 ----(1)

A7 = a+(7-1)d = a+6d = 9 ----(2)

After solving the equation (1) and (2)

The common difference is 1 .