Question

find the sum of AP:
please do this​

Answer 1

$\huge\underline\mathtt\green{Answer}$

a1 = a = -37

d = a2 - a1

d = -33 - (-37)

d = -33 + 37

d = 4

Sn = n/2 {2a +(n - 1)d}

S12 = 12/2 {2(-37) + (12 - 1)4}

S12 = 6 {-74 + 44}

S12 = 6{-30}

S12 = -180

Answer 2

Answer:

-23 , - 19 , - 15 , - 11 , -7 ,-3, 1, 5 , 9 , 13,17,21

hope it helps you.

I think it was easy , isn't it ?