Subtract 45/30 from 4/45
1st number: 4/45, 2nd number: 1 15/30
4/45 - 45/30 is -127/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 30 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
4/45 = 4 × 2/45 × 2 = 8/90 - Likewise, for the 2nd fraction, since 30 × 3 = 90,
45/30 = 45 × 3/30 × 3 = 135/90 - Subtract the two like fractions:
8/90 - 135/90 = 8 - 135/90 = -127/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/45-45/30 4/45-90/30 4/90-45/30 4/45-45/60 12/45-45/30 4/45-45/90 20/45-45/30 28/45-45/30