Subtract 42/40 from 35/12
1st number: 2 11/12, 2nd number: 1 2/40
35/12 - 42/40 is 28/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 12 × 10 = 120,
35/12 = 35 × 10/12 × 10 = 350/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
42/40 = 42 × 3/40 × 3 = 126/120 - Subtract the two like fractions:
350/120 - 126/120 = 350 - 126/120 = 224/120 - After reducing the fraction, the answer is 28/15
- In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12-42/40 35/12-84/40 35/24-42/40 35/12-42/80 35/36-42/40 35/60-42/40 35/84-42/40