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3112.50=300+12.50p
We move all terms to the left:
3112.50-(300+12.50p)=0
We add all the numbers together, and all the variables
-(12.50p+300)+3112.50=0
We add all the numbers together, and all the variables
-(12.50p+300)+3112.5=0
We get rid of parentheses
-12.50p-300+3112.5=0
We add all the numbers together, and all the variables
-12.5p+2812.5=0
We move all terms containing p to the left, all other terms to the right
-12.5p=-2812.5
p=-2812.5/-12.5
p=+225
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