Math, asked by dssufiyan50, 8 months ago

The sum of 15 th and 20 th terms of an AP is 80. Its 28th term is 60 , Find 7th term.

Answers

Answered by aryan073

2

Step-by-step explanation:

tn=a+14d=80

tn=a+19d=80

2a+33d=80

a+27d=60

multiply in second eqn by 2

2a+54d=120

solve this linear equations u get two values of x and y u get the answer perfectly

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