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8-(p/2)=-1
We move all terms to the left:
8-(p/2)-(-1)=0
We add all the numbers together, and all the variables
-(+p/2)+8-(-1)=0
We add all the numbers together, and all the variables
-(+p/2)+9=0
We get rid of parentheses
-p/2+9=0
We multiply all the terms by the denominator
-p+9*2=0
We add all the numbers together, and all the variables
-1p+18=0
We move all terms containing p to the left, all other terms to the right
-p=-18
p=-18/-1
p=+18
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