Subtract 10/42 from 4/18
4/18 - 10/42 is -1/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 42 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 42 × 3 = 126,
10/42 = 10 × 3/42 × 3 = 30/126 - Subtract the two like fractions:
28/126 - 30/126 = 28 - 30/126 = -2/126 - After reducing the fraction, the answer is -1/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/18-10/42 4/18-20/42 4/36-10/42 4/18-10/84 12/18-10/42 4/18-30/42 4/54-10/42 20/18-10/42 4/18-50/42 4/90-10/42 28/18-10/42 4/18-70/42