Subtract 48/20 from 42/14
1st number: 3 0/14, 2nd number: 2 8/20
42/14 - 48/20 is 3/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 14 × 10 = 140,
42/14 = 42 × 10/14 × 10 = 420/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
48/20 = 48 × 7/20 × 7 = 336/140 - Subtract the two like fractions:
420/140 - 336/140 = 420 - 336/140 = 84/140 - After reducing the fraction, the answer is 3/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/14-48/20 42/14-96/20 42/28-48/20 42/14-48/40 42/14-48/60 42/70-48/20 42/98-48/20