Subtract 28/54 from 70/49
1st number: 1 21/49, 2nd number: 28/54
70/49 - 28/54 is 172/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 54 is 2646
Next, find the equivalent fraction of both fractional numbers with denominator 2646 - For the 1st fraction, since 49 × 54 = 2646,
70/49 = 70 × 54/49 × 54 = 3780/2646 - Likewise, for the 2nd fraction, since 54 × 49 = 2646,
28/54 = 28 × 49/54 × 49 = 1372/2646 - Subtract the two like fractions:
3780/2646 - 1372/2646 = 3780 - 1372/2646 = 2408/2646 - After reducing the fraction, the answer is 172/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/49-56/54 70/98-28/54 70/49-84/54