Subtract 45/63 from 4/18
4/18 - 45/63 is -31/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 63 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
4/18 = 4 × 7/18 × 7 = 28/126 - Likewise, for the 2nd fraction, since 63 × 2 = 126,
45/63 = 45 × 2/63 × 2 = 90/126 - Subtract the two like fractions:
28/126 - 90/126 = 28 - 90/126 = -62/126 - After reducing the fraction, the answer is -31/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-45/63 4/18-90/63 4/36-45/63 12/18-45/63 4/54-45/63 20/18-45/63 4/90-45/63 28/18-45/63