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155.30+129.97(n-1)=415.24
We move all terms to the left:
155.30+129.97(n-1)-(415.24)=0
We add all the numbers together, and all the variables
129.97(n-1)-259.94=0
We multiply parentheses
129.97n-129.97-259.94=0
We add all the numbers together, and all the variables
129.97n-389.91=0
We move all terms containing n to the left, all other terms to the right
129.97n=389.91
n=389.91/129.97
n=3+5.68434188608E-14/129.97
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