Subtract 2/42 from 3/30
3/30 - 2/42 is 11/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
3/30 = 3 × 7/30 × 7 = 21/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
2/42 = 2 × 5/42 × 5 = 10/210 - Subtract the two like fractions:
21/210 - 10/210 = 21 - 10/210 = 11/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-2/42 3/30-4/42 3/60-2/42 3/30-2/84 9/30-2/42 3/30-6/42 3/90-2/42 15/30-2/42 3/30-10/42 21/30-2/42 3/30-14/42