Question

9+7+5+3....... To 14 terms find the sum​

Answer 1

here is your answer mate;

given that,n=14;a=9; d=7-9=-2

wkt,

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

therefore,

S14=14/2(2(9)+(14-1)(-2))

. =14(9-13)

. =14(-4) =-56

therefore the answer is -56

hope my answer was useful

please mark my answer as the brainliest

Answer 2

Answer:

-56

Step-by-step explanation:

refer to the attached image for explanation.......

Hope it will help you!!!!