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2.80=0.90p
We move all terms to the left:
2.80-(0.90p)=0
We add all the numbers together, and all the variables
-(+0.90p)+2.80=0
We add all the numbers together, and all the variables
-(+0.90p)+2.8=0
We get rid of parentheses
-0.90p+2.8=0
We add all the numbers together, and all the variables
-0.9p+2.8=0
We move all terms containing p to the left, all other terms to the right
-0.9p=-2.8
p=-2.8/-0.9
p=3+0.1/0.9
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