Subtract 18/60 from 10/21
10/21 - 18/60 is 37/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 21 × 20 = 420,
10/21 = 10 × 20/21 × 20 = 200/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Subtract the two like fractions:
200/420 - 126/420 = 200 - 126/420 = 74/420 - After reducing the fraction, the answer is 37/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21-18/60 10/21-36/60 10/42-18/60 30/21-18/60 10/21-54/60 10/63-18/60 50/21-18/60 10/21-90/60 70/21-18/60