Subtract 42/56 from 90/6
1st number: 15 0/6, 2nd number: 42/56
90/6 - 42/56 is 57/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 6 and 56 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 6 × 28 = 168,
90/6 = 90 × 28/6 × 28 = 2520/168 - Likewise, for the 2nd fraction, since 56 × 3 = 168,
42/56 = 42 × 3/56 × 3 = 126/168 - Subtract the two like fractions:
2520/168 - 126/168 = 2520 - 126/168 = 2394/168 - After reducing the fraction, the answer is 57/4
- In mixed form: 141/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/6-84/56 90/12-42/56 90/18-42/56 90/30-42/56 90/42-42/56