Subtract 9/4 from 4/21
1st number: 4/21, 2nd number: 2 1/4
421 - 94 is -17384.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
421 = 4 × 421 × 4 = 1684 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
94 = 9 × 214 × 21 = 18984 - Subtract the two like fractions:
1684 - 18984 = 16 - 18984 = -17384
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21-9/4 4/21-18/4 4/42-9/4 4/21-9/8 12/21-9/4 4/21-27/4 4/63-9/4 4/21-9/12 20/21-9/4 4/21-45/4 4/21-9/20 28/21-9/4 4/21-63/4 4/21-9/28