Subtract 1/7 from 54/15
1st number: 3 9/15, 2nd number: 1/7
54/15 - 1/7 is 121/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 7 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 15 × 7 = 105,
54/15 = 54 × 7/15 × 7 = 378/105 - Likewise, for the 2nd fraction, since 7 × 15 = 105,
1/7 = 1 × 15/7 × 15 = 15/105 - Subtract the two like fractions:
378/105 - 15/105 = 378 - 15/105 = 363/105 - After reducing the fraction, the answer is 121/35
- In mixed form: 316/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15-2/7 54/30-1/7 54/15-1/14 54/15-3/7 54/45-1/7 54/15-1/21 54/15-5/7 54/75-1/7 54/15-1/35 54/15-1/49