Subtract 8/90 from 42/5
1st number: 8 2/5, 2nd number: 8/90
42/5 - 8/90 is 374/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 5 × 18 = 90,
42/5 = 42 × 18/5 × 18 = 756/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90 - Subtract the two like fractions:
756/90 - 8/90 = 756 - 8/90 = 748/90 - After reducing the fraction, the answer is 374/45
- In mixed form: 814/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/5-8/90 42/5-16/90 42/10-8/90 42/5-24/90 42/15-8/90 42/5-40/90 42/25-8/90 42/5-56/90 42/35-8/90