Subtract 42/5 from 48/20
1st number: 2 8/20, 2nd number: 8 2/5
48/20 - 42/5 is -6/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 5 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 20 × 1 = 20,
48/20 = 48 × 1/20 × 1 = 48/20 - Likewise, for the 2nd fraction, since 5 × 4 = 20,
42/5 = 42 × 4/5 × 4 = 168/20 - Subtract the two like fractions:
48/20 - 168/20 = 48 - 168/20 = -120/20 - After reducing the fraction, the answer is -6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/20-42/5 48/20-84/5 48/40-42/5 48/20-42/10 48/60-42/5 48/20-42/15 48/20-42/25 48/20-42/35