Question

if the second term of AP is 4 and 7th term is-11 find it common difference​

Answer 1

Step-by-step explanation:

this answer will solve by elimination method the equation we will get from A2 and A7

answer will be -3

Answer 2

Answer:

A2=4

A7=-11

4=a+d. i)

-11=a+6d. ii

subtracting I) and ii ) we get

-5d=15

d=-15/5= -3