Subtract 25/84 from 12/15
12/15 - 25/84 is 211/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 15 × 28 = 420,
12/15 = 12 × 28/15 × 28 = 336/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
25/84 = 25 × 5/84 × 5 = 125/420 - Subtract the two like fractions:
336/420 - 125/420 = 336 - 125/420 = 211/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-25/84 12/15-50/84 12/30-25/84 36/15-25/84 12/15-75/84 12/45-25/84 60/15-25/84 12/75-25/84 84/15-25/84