Subtract 12/6 from 54/21
1st number: 2 12/21, 2nd number: 2 0/6
54/21 - 12/6 is 4/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 21 × 2 = 42,
54/21 = 54 × 2/21 × 2 = 108/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
12/6 = 12 × 7/6 × 7 = 84/42 - Subtract the two like fractions:
108/42 - 84/42 = 108 - 84/42 = 24/42 - After reducing the fraction, the answer is 4/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/21-24/6 54/42-12/6 54/21-36/6 54/63-12/6 54/21-12/18 54/21-60/6 54/21-12/30 54/21-84/6 54/21-12/42