Answer:
Explanation:

Here, n- number of terms ; d - common difference ; a - first term
![S_(8)=12\\\\(8)/(2)[2a+(8-1)*d]=12\\\\4[2a+7d]=12\\\\2a + 7d = (12)/(4)\\\\\\2a + 7d = 3 \ -----------------------(i)](https://img.qammunity.org/2023/formulas/mathematics/high-school/4te0rzv3cdki8akxog8wowlrhmqb4s6zrc.png)

2a + 15d = 7 ----------------(ii)
Subtract (i) from equation (ii)
(ii) 2a + 15d = 7
(i) 2a + 7d = 3
- - -
8d = 4
d = 4/8
d = 1/2
Plugin d = 1/2 in equation (i)

Second term = first term + d


AP is :
