Subtract 27/35 from 7/42
7/42 - 27/35 is -127/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 35 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 42 × 5 = 210,
7/42 = 7 × 5/42 × 5 = 35/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
27/35 = 27 × 6/35 × 6 = 162/210 - Subtract the two like fractions:
35/210 - 162/210 = 35 - 162/210 = -127/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-27/35 7/42-54/35 7/84-27/35 7/42-27/70 21/42-27/35 7/42-81/35 35/42-27/35 49/42-27/35