Subtract 7/42 from 3/35
3/35 - 7/42 is -17/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 35 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 35 × 6 = 210,
3/35 = 3 × 6/35 × 6 = 18/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Subtract the two like fractions:
18/210 - 35/210 = 18 - 35/210 = -17/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/35-7/42 3/35-14/42 3/70-7/42 3/35-7/84 9/35-7/42 3/35-21/42 15/35-7/42 3/35-35/42 21/35-7/42 3/35-49/42