Subtract 1/63 from 45/42
1st number: 1 3/42, 2nd number: 1/63
45/42 - 1/63 is 19/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
45/42 = 45 × 3/42 × 3 = 135/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
1/63 = 1 × 2/63 × 2 = 2/126 - Subtract the two like fractions:
135/126 - 2/126 = 135 - 2/126 = 133/126 - After reducing the fraction, the answer is 19/18
- In mixed form: 11/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/42-1/63 45/42-2/63 45/84-1/63 45/42-3/63 45/42-5/63 45/42-7/63