Subtract 3/10 from 81/49
1st number: 1 32/49, 2nd number: 3/10
81/49 - 3/10 is 663/490.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 10 is 490
Next, find the equivalent fraction of both fractional numbers with denominator 490 - For the 1st fraction, since 49 × 10 = 490,
81/49 = 81 × 10/49 × 10 = 810/490 - Likewise, for the 2nd fraction, since 10 × 49 = 490,
3/10 = 3 × 49/10 × 49 = 147/490 - Subtract the two like fractions:
810/490 - 147/490 = 810 - 147/490 = 663/490 - In mixed form: 1173/490
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/49-6/10 81/98-3/10 81/49-3/20 81/49-9/10 81/49-3/30 81/49-15/10 81/49-3/50 81/49-21/10 81/49-3/70