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0.3p-0.8=0.2p-1.9
We move all terms to the left:
0.3p-0.8-(0.2p-1.9)=0
We get rid of parentheses
0.3p-0.2p+1.9-0.8=0
We add all the numbers together, and all the variables
0.1p+1.1=0
We move all terms containing p to the left, all other terms to the right
0.1p=-1.1
p=-1.1/0.1
p=-11
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