Subtract 3/49 from 15/40
15/40 - 3/49 is 123/392.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 49 is 1960
Next, find the equivalent fraction of both fractional numbers with denominator 1960 - For the 1st fraction, since 40 × 49 = 1960,
15/40 = 15 × 49/40 × 49 = 735/1960 - Likewise, for the 2nd fraction, since 49 × 40 = 1960,
3/49 = 3 × 40/49 × 40 = 120/1960 - Subtract the two like fractions:
735/1960 - 120/1960 = 735 - 120/1960 = 615/1960 - After reducing the fraction, the answer is 123/392
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/40-3/49 15/40-6/49 15/80-3/49 15/40-3/98 45/40-3/49 15/40-9/49 75/40-3/49 15/40-15/49 15/40-21/49