Question

The 7th term of an AP is -39/12 and 15th term is -103/12.What is the 27th term? ​

Answer 1

Answer:

a7 = a +6d = -39/12

a15= a+14d =-103/12

solve the equation find a and d

put into a+26d = a27

Answer 2

Step-by-step explanation:

• a+6d=-39/12.........eq-1
• a+14d=-103/12….....eq-2

after, eq2-eq1

8d=(-103/12)-(-39/12)

=-64/12

so, d=-2/3

after putting the value of d in eq-1;

we get,

a=3/4

27th term=?

a+26d=?

3/4+26×(-2/3)= -199/12 ans.