Subtract 72/48 from 1/45
1st number: 1/45, 2nd number: 1 24/48
1/45 - 72/48 is -133/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 48 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 45 × 16 = 720,
1/45 = 1 × 16/45 × 16 = 16/720 - Likewise, for the 2nd fraction, since 48 × 15 = 720,
72/48 = 72 × 15/48 × 15 = 1080/720 - Subtract the two like fractions:
16/720 - 1080/720 = 16 - 1080/720 = -1064/720 - After reducing the fraction, the answer is -133/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45-72/48 1/90-72/48 1/45-72/96 3/45-72/48 5/45-72/48 7/45-72/48