Subtract 25/7 from 4/45
1st number: 4/45, 2nd number: 3 4/7
4/45 - 25/7 is -1097/315.
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,
4/45 = 4 × 7/45 × 7 = 28/315 - Likewise, for the 2nd fraction, since 7 × 45 = 315,
25/7 = 25 × 45/7 × 45 = 1125/315 - Subtract the two like fractions:
28/315 - 1125/315 = 28 - 1125/315 = -1097/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-25/7 4/45-50/7 4/90-25/7 4/45-25/14 12/45-25/7 4/45-75/7 4/45-25/21 20/45-25/7 4/45-25/35 28/45-25/7 4/45-25/49