Subtract 2/30 from 10/42
10/42 - 2/30 is 6/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
10/42 = 10 × 5/42 × 5 = 50/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
2/30 = 2 × 7/30 × 7 = 14/210 - Subtract the two like fractions:
50/210 - 14/210 = 50 - 14/210 = 36/210 - After reducing the fraction, the answer is 6/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/42-2/30 10/42-4/30 10/84-2/30 10/42-2/60 30/42-2/30 10/42-6/30 10/42-2/90 50/42-2/30 10/42-10/30 70/42-2/30 10/42-14/30