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6p-10.5+p+3p=120.75
We move all terms to the left:
6p-10.5+p+3p-(120.75)=0
We add all the numbers together, and all the variables
10p-131.25=0
We move all terms containing p to the left, all other terms to the right
10p=131.25
p=131.25/10
p=13+1/8
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