Subtract 18/75 from 21/4
1st number: 5 1/4, 2nd number: 18/75
21/4 - 18/75 is 501/100.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 75 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 4 × 75 = 300,
21/4 = 21 × 75/4 × 75 = 1575/300 - Likewise, for the 2nd fraction, since 75 × 4 = 300,
18/75 = 18 × 4/75 × 4 = 72/300 - Subtract the two like fractions:
1575/300 - 72/300 = 1575 - 72/300 = 1503/300 - After reducing the fraction, the answer is 501/100
- In mixed form: 51/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/4-18/75 21/4-36/75 21/8-18/75 63/4-18/75 21/4-54/75 21/12-18/75 21/4-90/75 21/20-18/75 21/28-18/75