Question

find the first term and common difference for each of the AP
1) 5, 1,-3,-7

Please ans me fast

with explaination
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Answer 1

Answer:

-4

Step-by-step explanation:

first first term of common difference is generally common difference formula D=A2- A1 then find -4 is the answer.

Answer 2

Answer:

first term (a) = 5

Common difference (d) = Any term - just before term

1-5 = -4