Subtract 54/9 from 28/7
1st number: 4 0/7, 2nd number: 6 0/9
28/7 - 54/9 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 9 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 7 × 9 = 63,
28/7 = 28 × 9/7 × 9 = 252/63 - Likewise, for the 2nd fraction, since 9 × 7 = 63,
54/9 = 54 × 7/9 × 7 = 378/63 - Subtract the two like fractions:
252/63 - 378/63 = 252 - 378/63 = -126/63 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/7-54/9 28/14-54/9 28/7-54/18 84/7-54/9 28/21-54/9 28/7-54/27 28/35-54/9 28/7-54/45 28/49-54/9 28/7-54/63