Subtract 12/80 from 49/21
1st number: 2 7/21, 2nd number: 12/80
49/21 - 12/80 is 131/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
49/21 = 49 × 80/21 × 80 = 3920/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
12/80 = 12 × 21/80 × 21 = 252/1680 - Subtract the two like fractions:
3920/1680 - 252/1680 = 3920 - 252/1680 = 3668/1680 - After reducing the fraction, the answer is 131/60
- In mixed form: 211/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/21-12/80 49/21-24/80 49/42-12/80 49/21-36/80 49/63-12/80 49/21-60/80 49/21-84/80