the 9th term of A.P is equal to 7times the 2nd term and 12th term exceeds 5 times the 3rd term by 2.find 1st term and common difference
Answers
Answered by
1
9{a+8d}=7{a+6d}; 2a+30d=0--------(1)
a+11d=5{a+2d}+2; 4a-d=--------(2)
Solve the above two equation d=2/61; a=-30/61
a+11d=5{a+2d}+2; 4a-d=--------(2)
Solve the above two equation d=2/61; a=-30/61
Similar questions