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n=1900(1-0.05)
We move all terms to the left:
n-(1900(1-0.05))=0
We add all the numbers together, and all the variables
n-(1900(0.95))=0
We add all the numbers together, and all the variables
n-1805=0
We move all terms containing n to the left, all other terms to the right
n=1805
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