Subtract 3/12 from 54/30
1st number: 1 24/30, 2nd number: 3/12
54/30 - 3/12 is 31/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
54/30 = 54 × 2/30 × 2 = 108/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
3/12 = 3 × 5/12 × 5 = 15/60 - Subtract the two like fractions:
108/60 - 15/60 = 108 - 15/60 = 93/60 - After reducing the fraction, the answer is 31/20
- In mixed form: 111/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-6/12 54/60-3/12 54/30-3/24 54/30-9/12 54/90-3/12 54/30-3/36 54/30-15/12 54/30-3/60 54/30-21/12 54/30-3/84