Subtract 75/21 from 49/4
1st number: 12 1/4, 2nd number: 3 12/21
49/4 - 75/21 is 243/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 21 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 4 × 21 = 84,
49/4 = 49 × 21/4 × 21 = 1029/84 - Likewise, for the 2nd fraction, since 21 × 4 = 84,
75/21 = 75 × 4/21 × 4 = 300/84 - Subtract the two like fractions:
1029/84 - 300/84 = 1029 - 300/84 = 729/84 - After reducing the fraction, the answer is 243/28
- In mixed form: 819/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/4-75/21 49/8-75/21 49/4-75/42 49/12-75/21 49/4-75/63 49/20-75/21 49/28-75/21