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-2.p=7.2
We move all terms to the left:
-2.p-(7.2)=0
We add all the numbers together, and all the variables
-2p-7.2=0
We move all terms containing p to the left, all other terms to the right
-2p=7.2
p=7.2/-2
p=-3+1/1.6666666666667
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