Subtract 8/35 from 5/42
5/42 - 8/35 is -23/210.
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,
5/42 = 5 × 5/42 × 5 = 25/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
8/35 = 8 × 6/35 × 6 = 48/210 - Subtract the two like fractions:
25/210 - 48/210 = 25 - 48/210 = -23/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42-8/35 5/42-16/35 5/84-8/35 5/42-8/70 15/42-8/35 5/42-24/35 25/42-8/35 5/42-40/35 35/42-8/35 5/42-56/35