Subtract 48/21 from 42/5
1st number: 8 2/5, 2nd number: 2 6/21
42/5 - 48/21 is 214/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 21 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 5 × 21 = 105,
42/5 = 42 × 21/5 × 21 = 882/105 - Likewise, for the 2nd fraction, since 21 × 5 = 105,
48/21 = 48 × 5/21 × 5 = 240/105 - Subtract the two like fractions:
882/105 - 240/105 = 882 - 240/105 = 642/105 - After reducing the fraction, the answer is 214/35
- In mixed form: 64/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-48/21 42/5-96/21 42/10-48/21 42/5-48/42 42/15-48/21 42/5-48/63 42/25-48/21 42/35-48/21