Subtract 3/54 from 72/45
1st number: 1 27/45, 2nd number: 3/54
72/45 - 3/54 is 139/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 45 × 6 = 270,
72/45 = 72 × 6/45 × 6 = 432/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
3/54 = 3 × 5/54 × 5 = 15/270 - Subtract the two like fractions:
432/270 - 15/270 = 432 - 15/270 = 417/270 - After reducing the fraction, the answer is 139/90
- In mixed form: 149/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/45-6/54 72/90-3/54 72/45-9/54 72/45-15/54 72/45-21/54