Subtract 54/7 from 4/45
1st number: 4/45, 2nd number: 7 5/7
4/45 - 54/7 is -2402/315.
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,
54/7 = 54 × 45/7 × 45 = 2430/315 - Subtract the two like fractions:
28/315 - 2430/315 = 28 - 2430/315 = -2402/315
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-54/7 4/90-54/7 4/45-54/14 12/45-54/7 4/45-54/21 20/45-54/7 4/45-54/35 28/45-54/7 4/45-54/49