Subtract 2/40 from 12/15
12/15 - 2/40 is 3/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
12/15 = 12 × 8/15 × 8 = 96/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
2/40 = 2 × 3/40 × 3 = 6/120 - Subtract the two like fractions:
96/120 - 6/120 = 96 - 6/120 = 90/120 - After reducing the fraction, the answer is 3/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15-2/40 12/15-4/40 12/30-2/40 12/15-2/80 36/15-2/40 12/15-6/40 12/45-2/40 60/15-2/40 12/15-10/40 12/75-2/40 84/15-2/40 12/15-14/40