Subtract 3/12 from 30/50
30/50 - 3/12 is 7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 50 × 6 = 300,
30/50 = 30 × 6/50 × 6 = 180/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
3/12 = 3 × 25/12 × 25 = 75/300 - Subtract the two like fractions:
180/300 - 75/300 = 180 - 75/300 = 105/300 - After reducing the fraction, the answer is 7/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50-3/12 30/50-6/12 30/50-3/24 90/50-3/12 30/50-9/12 30/50-3/36 30/50-15/12 30/50-3/60 30/50-21/12 30/50-3/84