Subtract 42/12 from 50/30
1st number: 1 20/30, 2nd number: 3 6/12
50/30 - 42/12 is -11/6.
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,
50/30 = 50 × 2/30 × 2 = 100/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
42/12 = 42 × 5/12 × 5 = 210/60 - Subtract the two like fractions:
100/60 - 210/60 = 100 - 210/60 = -110/60 - After reducing the fraction, the answer is -11/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-84/12 50/60-42/12 50/30-42/24 50/90-42/12 50/30-42/36 50/30-42/60 50/30-42/84