Question

مل
2 The fifth team of an Ap is 17 and
its twelth terms exceeds its seventh term by 15 find common different and the first term



​

Answer 1

Answer:

a5=17

a+4d=17................(1)

a12=a7+15

a+11d=a+6d+15

a+11d-a-6d=15

5d=15

d=3

From eq. (1)

a+4d=17

a+(4*3)=17

a+12=17

a=5