Subtract 15/49 from 10/40
10/40 - 15/49 is -11/196.
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,
10/40 = 10 × 49/40 × 49 = 490/1960 - Likewise, for the 2nd fraction, since 49 × 40 = 1960,
15/49 = 15 × 40/49 × 40 = 600/1960 - Subtract the two like fractions:
490/1960 - 600/1960 = 490 - 600/1960 = -110/1960 - After reducing the fraction, the answer is -11/196
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/40-15/49 10/40-30/49 10/80-15/49 10/40-15/98 30/40-15/49 10/40-45/49 50/40-15/49 10/40-75/49 70/40-15/49