Subtract 2/21 from 18/60
18/60 - 2/21 is 43/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 21 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 60 × 7 = 420,
18/60 = 18 × 7/60 × 7 = 126/420 - Likewise, for the 2nd fraction, since 21 × 20 = 420,
2/21 = 2 × 20/21 × 20 = 40/420 - Subtract the two like fractions:
126/420 - 40/420 = 126 - 40/420 = 86/420 - After reducing the fraction, the answer is 43/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/60-2/21 18/60-4/21 18/60-2/42 54/60-2/21 18/60-6/21 18/60-2/63 90/60-2/21 18/60-10/21 18/60-14/21