Subtract 25/7 from 28/45
1st number: 28/45, 2nd number: 3 4/7
28/45 - 25/7 is -929/315.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 7 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
28/45 = 28 × 7/45 × 7 = 196/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
25/7 = 25 × 45/7 × 45 = 1125/315 - Subtract the two like fractions:
196/315 - 1125/315 = 196 - 1125/315 = -929/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/45-25/7 28/45-50/7 28/90-25/7 28/45-25/14 84/45-25/7 28/45-75/7 28/45-25/21 28/45-25/35 28/45-25/49