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0.4p-5=0.8p+3
We move all terms to the left:
0.4p-5-(0.8p+3)=0
We get rid of parentheses
0.4p-0.8p-3-5=0
We add all the numbers together, and all the variables
-0.4p-8=0
We move all terms containing p to the left, all other terms to the right
-0.4p=8
p=8/-0.4
p=-20
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