Subtract 7/6 from 72/42
1st number: 1 30/42, 2nd number: 1 1/6
72/42 - 7/6 is 23/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
72/42 = 72 × 1/42 × 1 = 72/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
7/6 = 7 × 7/6 × 7 = 49/42 - Subtract the two like fractions:
72/42 - 49/42 = 72 - 49/42 = 23/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/42-14/6 72/84-7/6 72/42-7/12 72/42-21/6 72/42-7/18 72/42-35/6 72/42-7/30 72/42-49/6 72/42-7/42