Answer:
5p+12-(7p+2)=2p-1-(5p+12)
5p+12-7p-2=2p-1-5p-12
-2p+10=-3p-13
-2p+3p=-13-10
p=-23
then substitute
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Answer:
5p+12-(7p+2)=2p-1-(5p+12)
5p+12-7p-2=2p-1-5p-12
-2p+10=-3p-13
-2p+3p=-13-10
p=-23
then substitute