Subtract 42/90 from 27/6
1st number: 4 3/6, 2nd number: 42/90
27/6 - 42/90 is 121/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 6 × 15 = 90,
27/6 = 27 × 15/6 × 15 = 405/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
42/90 = 42 × 1/90 × 1 = 42/90 - Subtract the two like fractions:
405/90 - 42/90 = 405 - 42/90 = 363/90 - After reducing the fraction, the answer is 121/30
- In mixed form: 41/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/6-42/90 27/6-84/90 27/12-42/90 81/6-42/90 27/18-42/90 27/30-42/90 27/42-42/90