Question

the common difference of an AP whose 4th term is 19 and 7th term is 28 is​

Answer 1

Answer:

here common difference of an AP is 3

Answer 2

Answer:

common difference = 3 ( three)

Step-by-step explanation:

a+3d= 19......(1)

a+ 6d=28.......(2)

subract equation (1) from (2 )

d=3