Subtract 21/45 from 54/3
1st number: 18 0/3, 2nd number: 21/45
54/3 - 21/45 is 263/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 3 × 15 = 45,
54/3 = 54 × 15/3 × 15 = 810/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
21/45 = 21 × 1/45 × 1 = 21/45 - Subtract the two like fractions:
810/45 - 21/45 = 810 - 21/45 = 789/45 - After reducing the fraction, the answer is 263/15
- In mixed form: 178/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/3-42/45 54/6-21/45 54/3-21/90 54/3-63/45 54/9-21/45 54/15-21/45 54/21-21/45