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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Answers & Comments
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