Subtract 3/18 from 35/42
35/42 - 3/18 is 2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 42 × 3 = 126,
35/42 = 35 × 3/42 × 3 = 105/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Subtract the two like fractions:
105/126 - 21/126 = 105 - 21/126 = 84/126 - After reducing the fraction, the answer is 2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/42-3/18 35/42-6/18 35/84-3/18 35/42-3/36 35/42-9/18 35/42-3/54 35/42-15/18 35/42-3/90 35/42-21/18