Subtract 6/90 from 42/28
1st number: 1 14/28, 2nd number: 6/90
42/28 - 6/90 is 43/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 90 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 90 × 14 = 1260,
6/90 = 6 × 14/90 × 14 = 84/1260 - Subtract the two like fractions:
1890/1260 - 84/1260 = 1890 - 84/1260 = 1806/1260 - After reducing the fraction, the answer is 43/30
- In mixed form: 113/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/28-6/90 42/28-12/90 42/56-6/90 42/28-18/90 42/84-6/90 42/28-30/90 42/28-42/90