Subtract 16/45 from 42/15
1st number: 2 12/15, 2nd number: 16/45
42/15 - 16/45 is 22/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
42/15 = 42 × 3/15 × 3 = 126/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
16/45 = 16 × 1/45 × 1 = 16/45 - Subtract the two like fractions:
126/45 - 16/45 = 126 - 16/45 = 110/45 - After reducing the fraction, the answer is 22/9
- In mixed form: 24/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15-16/45 42/15-32/45 42/30-16/45 42/15-16/90 42/15-48/45 42/45-16/45 42/15-80/45 42/75-16/45