Subtract 42/15 from 50/84
1st number: 50/84, 2nd number: 2 12/15
50/84 - 42/15 is -463/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 15 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
50/84 = 50 × 5/84 × 5 = 250/420 - Likewise, for the 2nd fraction, since 15 × 28 = 420,
42/15 = 42 × 28/15 × 28 = 1176/420 - Subtract the two like fractions:
250/420 - 1176/420 = 250 - 1176/420 = -926/420 - After reducing the fraction, the answer is -463/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/84-84/15 50/84-42/30 50/84-42/45 50/84-42/75