Subtract 48/42 from 81/8
1st number: 10 1/8, 2nd number: 1 6/42
81/8 - 48/42 is 503/56.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 42 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 8 × 21 = 168,
81/8 = 81 × 21/8 × 21 = 1701/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
48/42 = 48 × 4/42 × 4 = 192/168 - Subtract the two like fractions:
1701/168 - 192/168 = 1701 - 192/168 = 1509/168 - After reducing the fraction, the answer is 503/56
- In mixed form: 855/56
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/8-96/42 81/16-48/42 81/8-48/84 81/24-48/42 81/40-48/42 81/56-48/42