Subtract 20/49 from 15/35
15/35 - 20/49 is 1/49.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 49 is 245
Next, find the equivalent fraction of both fractional numbers with denominator 245 - For the 1st fraction, since 35 × 7 = 245,
15/35 = 15 × 7/35 × 7 = 105/245 - Likewise, for the 2nd fraction, since 49 × 5 = 245,
20/49 = 20 × 5/49 × 5 = 100/245 - Subtract the two like fractions:
105/245 - 100/245 = 105 - 100/245 = 5/245 - After reducing the fraction, the answer is 1/49
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/35-20/49 15/35-40/49 15/70-20/49 15/35-20/98 45/35-20/49 15/35-60/49 75/35-20/49