Subtract 7/42 from 45/8
1st number: 5 5/8, 2nd number: 7/42
45/8 - 7/42 is 131/24.
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,
45/8 = 45 × 21/8 × 21 = 945/168 - Likewise, for the 2nd fraction, since 42 × 4 = 168,
7/42 = 7 × 4/42 × 4 = 28/168 - Subtract the two like fractions:
945/168 - 28/168 = 945 - 28/168 = 917/168 - After reducing the fraction, the answer is 131/24
- In mixed form: 511/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/8-7/42 45/8-14/42 45/16-7/42 45/8-7/84 45/8-21/42 45/24-7/42 45/8-35/42 45/40-7/42 45/8-49/42 45/56-7/42