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KIKAY200508IN
Answered

find p so that the number p+7, 3p+9+,p+3, ...form an arithmetic sequence.​

Sagot :

AMELIAELODIA433IN

Answer:

p= -2

Step-by-step explanation:

{p+3-(3p+9)=d}

{3p+9-(p+7)=d}

{-2p-6=d}

{2p+2=2}

-2p-6=2p+2

-4p=2+6

-2p+8

p=-2

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