Subtract 3/42 from 5/10
5/10 - 3/42 is 3/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
5/10 = 5 × 21/10 × 21 = 105/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Subtract the two like fractions:
105/210 - 15/210 = 105 - 15/210 = 90/210 - After reducing the fraction, the answer is 3/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10-6/42 5/20-3/42 5/10-3/84 15/10-3/42 5/10-9/42 5/30-3/42 25/10-3/42 5/10-15/42 5/50-3/42 35/10-3/42 5/10-21/42 5/70-3/42