Question

Find the sum of the AP. 14-32 - 30
-10​

Answer 1

Step-by-step explanation:

a4 = 4  Let d = common difference.

 

First 7 terms:  4-3d, 4-2d, 4-d, 4, 4+d, 4+2d, 4+3d

 

Sum of first 7 terms = 4(7) = 28

Answer 2

Answer:

a4 = 4 Let d = common difference.

First 7 terms: 4-3d, 4-2d, 4-d, 4, 4+d, 4+2d, 4+3d

Sum of first 7 terms = 4(7) = 28