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-\frac{1}{42}=\frac{\frac{7}{42}-\frac{12}{42}+\frac{2}{3}-\frac{3}{14}}{\frac{1}{3}}
Least common multiple of 6 and 7 is 42. Convert \frac{1}{6} and \frac{2}{7} to fractions with denominator 42.
-\frac{1}{42}=\frac{\frac{7-12}{42}+\frac{2}{3}-\frac{3}{14}}{\frac{1}{3}}
Since \frac{7}{42} and \frac{12}{42} have the same denominator, subtract them by subtracting their numerators.
-\frac{1}{42}=\frac{-\frac{5}{42}+\frac{2}{3}-\frac{3}{14}}{\frac{1}{3}}
Subtract 12 from 7 to get -5.
-\frac{1}{42}=\frac{-\frac{5}{42}+\frac{28}{42}-\frac{3}{14}}{\frac{1}{3}}
Least common multiple of 42 and 3 is 42. Convert -\frac{5}{42} and \frac{2}{3} to fractions with denominator 42.
-\frac{1}{42}=\frac{\frac{-5+28}{42}-\frac{3}{14}}{\frac{1}{3}}
Since -\frac{5}{42} and \frac{28}{42} have the same denominator, add them by adding their numerators.
-\frac{1}{42}=\frac{\frac{23}{42}-\frac{3}{14}}{\frac{1}{3}}
Add -5 and 28 to get 23.
-\frac{1}{42}=\frac{\frac{23}{42}-\frac{9}{42}}{\frac{1}{3}}
Least common multiple of 42 and 14 is 42. Convert \frac{23}{42} and \frac{3}{14} to fractions with denominator 42.
-\frac{1}{42}=\frac{\frac{23-9}{42}}{\frac{1}{3}}
Since \frac{23}{42} and \frac{9}{42} have the same denominator, subtract them by subtracting their numerators.
-\frac{1}{42}=\frac{\frac{14}{42}}{\frac{1}{3}}
Subtract 9 from 23 to get 14.
-\frac{1}{42}=\frac{\frac{1}{3}}{\frac{1}{3}}
Reduce the fraction \frac{14}{42} to lowest terms by extracting and canceling out 14.
-\frac{1}{42}=1
Divide \frac{1}{3} by \frac{1}{3} to get 1.
-\frac{1}{42}=\frac{42}{42}
Convert 1 to fraction \frac{42}{42}.
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Compare -\frac{1}{42} and \frac{42}{42}.