6 times the 6th term = 11 times the 11th term. Then find 7th term
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the answer is very easy i.e. _10d
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6T6 = 11T11
6(a+5d) = 11(a+10d)
6a+30d = 11a+110d
11a-6a+110d-30d=0
5a+80d = 0
a = -16d
T7=a+6d
= -16d+6d
= -10d
6(a+5d) = 11(a+10d)
6a+30d = 11a+110d
11a-6a+110d-30d=0
5a+80d = 0
a = -16d
T7=a+6d
= -16d+6d
= -10d
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