Subtract 15/7 from 3/54
1st number: 3/54, 2nd number: 2 1/7
3/54 - 15/7 is -263/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 7 is 378
Next, find the equivalent fraction of both fractional numbers with denominator 378 - For the 1st fraction, since 54 × 7 = 378,
3/54 = 3 × 7/54 × 7 = 21/378 - Likewise, for the 2nd fraction, since 7 × 54 = 378,
15/7 = 15 × 54/7 × 54 = 810/378 - Subtract the two like fractions:
21/378 - 810/378 = 21 - 810/378 = -789/378 - After reducing the fraction, the answer is -263/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/54-15/7 3/54-30/7 3/54-15/14 9/54-15/7 3/54-45/7 3/54-15/21 15/54-15/7 3/54-75/7 3/54-15/35 21/54-15/7 3/54-15/49