9. question please solve it step by step
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Step-by-step explanation:
T₃ = 12
a+2d = 12......(1)
and T₅₀ = 106
a+49d=106......(2)
solve (1) and (2)
a+2d=12
a+49d=106
(-)
-47d = -94
d=94/47
d=2
sub in (1)
a+2 x 2 =12
a+ 4 =12
a=8
now T₂₉ = a+28d
= 8+ 56
= 64
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