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-2p-3=-2(2p+1)
We move all terms to the left:
-2p-3-(-2(2p+1))=0
We calculate terms in parentheses: -(-2(2p+1)), so:We get rid of parentheses
-2(2p+1)
We multiply parentheses
-4p-2
Back to the equation:
-(-4p-2)
-2p+4p+2-3=0
We add all the numbers together, and all the variables
2p-1=0
We move all terms containing p to the left, all other terms to the right
2p=1
p=1/2
p=1/2
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