Subtract 14/45 from 21/4
1st number: 5 1/4, 2nd number: 14/45
21/4 - 14/45 is 889/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 4 × 45 = 180,
21/4 = 21 × 45/4 × 45 = 945/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
14/45 = 14 × 4/45 × 4 = 56/180 - Subtract the two like fractions:
945/180 - 56/180 = 945 - 56/180 = 889/180 - In mixed form: 4169/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-14/45 21/4-28/45 21/8-14/45 21/4-14/90 63/4-14/45 21/4-42/45 21/12-14/45 21/4-70/45 21/20-14/45 21/4-98/45 21/28-14/45