Subtract 42/15 from 10/16
1st number: 10/16, 2nd number: 2 12/15
10/16 - 42/15 is -87/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 15 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 16 × 15 = 240,
10/16 = 10 × 15/16 × 15 = 150/240 - Likewise, for the 2nd fraction, since 15 × 16 = 240,
42/15 = 42 × 16/15 × 16 = 672/240 - Subtract the two like fractions:
150/240 - 672/240 = 150 - 672/240 = -522/240 - After reducing the fraction, the answer is -87/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/16-42/15 10/16-84/15 10/32-42/15 10/16-42/30 30/16-42/15 10/48-42/15 10/16-42/45 50/16-42/15 10/80-42/15 10/16-42/75 70/16-42/15