Solve for a
a=\frac{1}{15}\approx 0.066666667
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a=\frac{0.4}{6}
Divide both sides by 6.
a=\frac{4}{60}
Expand \frac{0.4}{6} by multiplying both numerator and the denominator by 10.
a=\frac{1}{15}
Reduce the fraction \frac{4}{60} to lowest terms by extracting and canceling out 4.
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