Subtract 42/28 from 15/4
1st number: 3 3/4, 2nd number: 1 14/28
15/4 - 42/28 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 28 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 4 × 7 = 28,
15/4 = 15 × 7/4 × 7 = 105/28 - Likewise, for the 2nd fraction, since 28 × 1 = 28,
42/28 = 42 × 1/28 × 1 = 42/28 - Subtract the two like fractions:
105/28 - 42/28 = 105 - 42/28 = 63/28 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/4-42/28 15/4-84/28 15/8-42/28 15/4-42/56 45/4-42/28 15/12-42/28 15/4-42/84 75/4-42/28 15/20-42/28 15/28-42/28