Math, asked by akankshukabir5358, 10 months ago

What is the first term of A.P. if common difference is -5 and 18th term is -68.​

Answers

Answered by Anonymous
6

Answer:

a = 17

Step-by-step explanation:

a18 = -68

d = -5

n = 18

a = ??

an = a + (n - 1) d

-68 = a + (18 - 1) (-5)

-68 = a - 85

a = -68 + 85

a = 17

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Answered by Sumitphoenix
1

Answer:

a = 17

Step-by-step explanation:

a18 = -68

d = -5

n = 18

a = ??

an = a + (n - 1) d

-68 = a + (18 - 1) (-5)

-68 = a - 85

a = -68 + 85

a = 17

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