Subtract 21/49 from 45/35
1st number: 1 10/35, 2nd number: 21/49
45/35 - 21/49 is 6/7.
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,
45/35 = 45 × 7/35 × 7 = 315/245 - Likewise, for the 2nd fraction, since 49 × 5 = 245,
21/49 = 21 × 5/49 × 5 = 105/245 - Subtract the two like fractions:
315/245 - 105/245 = 315 - 105/245 = 210/245 - After reducing the fraction, the answer is 6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/35-21/49 45/35-42/49 45/70-21/49 45/35-21/98 45/35-63/49