Question

Find the 12th term of the sequence
(2a-b), (5a-b), (8a-b) .....​

Answer 1

Answer:

35a-b

Step-by-step explanation:

Using the simple arithmetic formulas

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Answer 2

Answer:

this question belongs to airthematic progression.(AP

Step-by-step explanation:

Given AP is (2a-b), (5a-b), (8a-b) ..........,

first term (a) = (2a-b)

common difference (d) = a2 - a1

= (5a-b) - (2a-b)

= 5a-2a = 3a

common difference (d) = 3a

12th term = a+11d

= (2a-b) + 11 × 3a

= 2a+33a-b

=35a - b

hence 12th term is 35a - b