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30.5=2p-5.5
We move all terms to the left:
30.5-(2p-5.5)=0
We get rid of parentheses
-2p+5.5+30.5=0
We add all the numbers together, and all the variables
-2p+36=0
We move all terms containing p to the left, all other terms to the right
-2p=-36
p=-36/-2
p=+18
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