Subtract 4/45 from 42/28
1st number: 1 14/28, 2nd number: 4/45
42/28 - 4/45 is 127/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 45 is 1260
Next, find the equivalent fraction of both fractional numbers with denominator 1260 - For the 1st fraction, since 28 × 45 = 1260,
42/28 = 42 × 45/28 × 45 = 1890/1260 - Likewise, for the 2nd fraction, since 45 × 28 = 1260,
4/45 = 4 × 28/45 × 28 = 112/1260 - Subtract the two like fractions:
1890/1260 - 112/1260 = 1890 - 112/1260 = 1778/1260 - After reducing the fraction, the answer is 127/90
- In mixed form: 137/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-4/45 42/28-8/45 42/56-4/45 42/28-4/90 42/28-12/45 42/84-4/45 42/28-20/45 42/28-28/45