Solve for n_4
n_{4} = \frac{840}{17} = 49\frac{7}{17} \approx 49.411764706
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n_{4}=\frac{1680}{34}
Divide both sides by 34.
n_{4}=\frac{840}{17}
Reduce the fraction \frac{1680}{34} to lowest terms by extracting and canceling out 2.
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