maths
posted by simranpreet .
the 8th term of an a.p is 37 and 12th term is 57 .find the a.p
please help this questions .please help.

8th term is 37 > a+7d = 37
12th term is 57 > a + 11d = 57
subtract them:
4d = 20
d = 5
into a+7d=37
a+35=37
a = 2
A.P. is 2 7 12 17 ....