if sum of 3rd and 8th terms of an AP is 7 and sum of 7th and 14th terms is -3 then find the 10th term
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by above to equation you can obtain your answer
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3rd term= a+2d,8th term =a+7d
7th term=a+6d,14th term=a+13d
a+2d+a+7d=7, 2a+9d=7
a+6d+a+13d=2a+19d=-3
by subscracting=-10d=10=d=-1
by putting the value of d, a=8
10th term =a+9d=8-9=-1
7th term=a+6d,14th term=a+13d
a+2d+a+7d=7, 2a+9d=7
a+6d+a+13d=2a+19d=-3
by subscracting=-10d=10=d=-1
by putting the value of d, a=8
10th term =a+9d=8-9=-1
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