Subtract 35/10 from 42/15
1st number: 2 12/15, 2nd number: 3 5/10
42/15 - 35/10 is -7/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 10 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
42/15 = 42 × 2/15 × 2 = 84/30 - Likewise, for the 2nd fraction, since 10 × 3 = 30,
35/10 = 35 × 3/10 × 3 = 105/30 - Subtract the two like fractions:
84/30 - 105/30 = 84 - 105/30 = -21/30 - After reducing the fraction, the answer is -7/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15-35/10 42/15-70/10 42/30-35/10 42/15-35/20 42/45-35/10 42/15-35/30 42/75-35/10 42/15-35/50 42/15-35/70