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3n+8(8+7n)=418
We move all terms to the left:
3n+8(8+7n)-(418)=0
We add all the numbers together, and all the variables
3n+8(7n+8)-418=0
We multiply parentheses
3n+56n+64-418=0
We add all the numbers together, and all the variables
59n-354=0
We move all terms containing n to the left, all other terms to the right
59n=354
n=354/59
n=6
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