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21 votes
Please help! also please explain how to solve

Please help! also please explain how to solve-example-1

1 Answer

6 votes

Answer:

B

Explanation:

a+2d=0

a+3d=6

d=6

a=6-3(6)

a=6-18

a= -12

a+(n-1)d

= -12+(n-1)6

= -12+6n-6

= -18+6n

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