Question

Find the first term and the difference of an arithmetic progression if the sum of its first five even terms is equal to 15 and the sum of the first three terms is equal to -3.​

Answer 1

Answer:

-17 Is The Answer

Hope It Helps

Answer 2

Answer:

Step-by-step explanation:

let the terms be a,a+d,.....

then given- a+(a+2d)+(a+4d)+(a+6d)+(a+7d) =15

5a+20d=15

a+4d=3---equation 1

then a+a+d+a+2d=-3

3a+3d=-3

a+d=-1---equation 2

solving equ 1 and equ 2

3d=4

d=4/3

a=-7/3