Subtract 4/40 from 40/15
1st number: 2 10/15, 2nd number: 4/40
40/15 - 4/40 is 77/30.
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,
40/15 = 40 × 8/15 × 8 = 320/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
4/40 = 4 × 3/40 × 3 = 12/120 - Subtract the two like fractions:
320/120 - 12/120 = 320 - 12/120 = 308/120 - After reducing the fraction, the answer is 77/30
- In mixed form: 217/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/15-4/40 40/15-8/40 40/30-4/40 40/15-4/80 40/15-12/40 40/45-4/40 40/15-20/40 40/75-4/40 40/15-28/40