The sum of a 6th and 7th term of an ap is 39 and the common difference is 3 then the first term of AP is
Answers
Answered by
0
a5=a+5d,
a7=a+6d
a+5d+a+6d=39
a+11d=39
a+11(3)=39
a+33= 39
a=6
Similar questions