Subtract 15/49 from 42/20
1st number: 2 2/20, 2nd number: 15/49
42/20 - 15/49 is 879/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 49 is 980
Next, find the equivalent fraction of both fractional numbers with denominator 980 - For the 1st fraction, since 20 × 49 = 980,
42/20 = 42 × 49/20 × 49 = 2058/980 - Likewise, for the 2nd fraction, since 49 × 20 = 980,
15/49 = 15 × 20/49 × 20 = 300/980 - Subtract the two like fractions:
2058/980 - 300/980 = 2058 - 300/980 = 1758/980 - After reducing the fraction, the answer is 879/490
- In mixed form: 1389/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/20-15/49 42/20-30/49 42/40-15/49 42/20-15/98 42/20-45/49 42/60-15/49 42/20-75/49