Subtract 16/15 from 12/40
1st number: 12/40, 2nd number: 1 1/15
12/40 - 16/15 is -23/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
12/40 = 12 × 3/40 × 3 = 36/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
16/15 = 16 × 8/15 × 8 = 128/120 - Subtract the two like fractions:
36/120 - 128/120 = 36 - 128/120 = -92/120 - After reducing the fraction, the answer is -23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/40-16/15 12/40-32/15 12/80-16/15 12/40-16/30 36/40-16/15 12/40-48/15 12/40-16/45 60/40-16/15 12/40-80/15 12/40-16/75 84/40-16/15