Subtract 15/16 from 42/15
1st number: 2 12/15, 2nd number: 15/16
42/15 - 15/16 is 149/80.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 16 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 15 × 16 = 240,
42/15 = 42 × 16/15 × 16 = 672/240 - Likewise, for the 2nd fraction, since 16 × 15 = 240,
15/16 = 15 × 15/16 × 15 = 225/240 - Subtract the two like fractions:
672/240 - 225/240 = 672 - 225/240 = 447/240 - After reducing the fraction, the answer is 149/80
- In mixed form: 169/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15-15/16 42/15-30/16 42/30-15/16 42/15-15/32 42/15-45/16 42/45-15/16 42/15-15/48 42/15-75/16 42/75-15/16 42/15-15/80