which term of the ap 9 12 15 18... is 39 less from its 49th term
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Answer:
36th term
Step-by-step explanation:
Un = 9 + 3n-3 = 3n+6
U49 = 3x49 + 6 = 153
153 -39 = 114 = 3n +6 , 3n = 108 , n = 36
36th term
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