Subtract 21/72 from 12/10
1st number: 1 2/10, 2nd number: 21/72
12/10 - 21/72 is 109/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 10 × 36 = 360,
12/10 = 12 × 36/10 × 36 = 432/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
21/72 = 21 × 5/72 × 5 = 105/360 - Subtract the two like fractions:
432/360 - 105/360 = 432 - 105/360 = 327/360 - After reducing the fraction, the answer is 109/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/10-21/72 12/10-42/72 12/20-21/72 36/10-21/72 12/10-63/72 12/30-21/72 60/10-21/72 12/50-21/72 84/10-21/72 12/70-21/72