Subtract 2/42 from 28/8
1st number: 3 4/8, 2nd number: 2/42
28/8 - 2/42 is 145/42.
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,
28/8 = 28 × 21/8 × 21 = 588/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
2/42 = 2 × 4/42 × 4 = 8/168 - Subtract the two like fractions:
588/168 - 8/168 = 588 - 8/168 = 580/168 - After reducing the fraction, the answer is 145/42
- In mixed form: 319/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/8-2/42 28/8-4/42 28/16-2/42 28/8-2/84 84/8-2/42 28/8-6/42 28/24-2/42 28/8-10/42 28/40-2/42 28/8-14/42 28/56-2/42