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3(5n-4)=102
We move all terms to the left:
3(5n-4)-(102)=0
We multiply parentheses
15n-12-102=0
We add all the numbers together, and all the variables
15n-114=0
We move all terms containing n to the left, all other terms to the right
15n=114
n=114/15
n=7+3/5
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