Subtract 15/60 from 12/42
12/42 - 15/60 is 1/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 60 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
12/42 = 12 × 10/42 × 10 = 120/420 - Likewise, for the 2nd fraction, since 60 × 7 = 420,
15/60 = 15 × 7/60 × 7 = 105/420 - Subtract the two like fractions:
120/420 - 105/420 = 120 - 105/420 = 15/420 - After reducing the fraction, the answer is 1/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/42-15/60 12/42-30/60 12/84-15/60 36/42-15/60 12/42-45/60 60/42-15/60 12/42-75/60 84/42-15/60