Question

for
an
A.P.t3 = 13
and t8 = 33. find t15
=​

Answer 1

Answer:

T3=a+2d=13. .i

T8=a+7d=28. .ii

subtracting equation i from ii

d=3

substituting value of d=3 in eq.i

a+ 2 ×3=13

a=13-6

a=7

Step-by-step explanation: