Subtract 72/42 from 1/6
1st number: 1/6, 2nd number: 1 30/42
1/6 - 72/42 is -65/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 6 × 7 = 42,
1/6 = 1 × 7/6 × 7 = 7/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
72/42 = 72 × 1/42 × 1 = 72/42 - Subtract the two like fractions:
7/42 - 72/42 = 7 - 72/42 = -65/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/6-72/42 1/12-72/42 1/6-72/84 3/6-72/42 1/18-72/42 5/6-72/42 1/30-72/42 7/6-72/42 1/42-72/42