Subtract 8/42 from 45/2
1st number: 22 1/2, 2nd number: 8/42
45/2 - 8/42 is 937/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
45/2 = 45 × 21/2 × 21 = 945/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
8/42 = 8 × 1/42 × 1 = 8/42 - Subtract the two like fractions:
945/42 - 8/42 = 945 - 8/42 = 937/42 - In mixed form: 2213/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/2-8/42 45/2-16/42 45/4-8/42 45/2-8/84 45/2-24/42 45/6-8/42 45/2-40/42 45/10-8/42 45/2-56/42 45/14-8/42