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The sum of the fifth and the sixth term of an AP is 30. If the third term is 5, find the first term. ...

The sum of the fifth and the sixth term of an AP is 30. If the third term is 5, find the first term.

Answers

a+4d+a+5d=30
2a+9d=30………(i)
a+2d=5………..(ii)
2a+9d=30
2a+4d=10
5d=20
d=4
a+2 x 4=5
a=5-8=-3
a=-3

Kavungya answered the question on September 21, 2019 at 07:12

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