Subtract 12/40 from 30/6
1st number: 5 0/6, 2nd number: 12/40
30/6 - 12/40 is 47/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 6 × 20 = 120,
30/6 = 30 × 20/6 × 20 = 600/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Subtract the two like fractions:
600/120 - 36/120 = 600 - 36/120 = 564/120 - After reducing the fraction, the answer is 47/10
- In mixed form: 47/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/6-12/40 30/6-24/40 30/12-12/40 30/6-12/80 90/6-12/40 30/6-36/40 30/18-12/40 30/6-60/40 30/6-84/40 30/42-12/40