Solve for p
p = \frac{13}{2} = 6\frac{1}{2} = 6.5
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2p-5=8
Swap sides so that all variable terms are on the left hand side.
2p=8+5
Add 5 to both sides.
2p=13
Add 8 and 5 to get 13.
p=\frac{13}{2}
Divide both sides by 2.
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