Subtract 3/42 from 2/70
2/70 - 3/42 is -3/70.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 70 × 3 = 210,
2/70 = 2 × 3/70 × 3 = 6/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
3/42 = 3 × 5/42 × 5 = 15/210 - Subtract the two like fractions:
6/210 - 15/210 = 6 - 15/210 = -9/210 - After reducing the fraction, the answer is -3/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/70-3/42 2/70-6/42 2/70-3/84 6/70-3/42 2/70-9/42 10/70-3/42 2/70-15/42 14/70-3/42 2/70-21/42