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10.50+1.50(n-1)=75
We move all terms to the left:
10.50+1.50(n-1)-(75)=0
We add all the numbers together, and all the variables
1.50(n-1)-64.5=0
We multiply parentheses
1.5n-1.5-64.5=0
We add all the numbers together, and all the variables
1.5n-66=0
We move all terms containing n to the left, all other terms to the right
1.5n=66
n=66/1.5
n=44
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