Subtract 10/35 from 4/42
4/42 - 10/35 is -4/21.
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,
4/42 = 4 × 5/42 × 5 = 20/210 - Likewise, for the 2nd fraction, since 35 × 6 = 210,
10/35 = 10 × 6/35 × 6 = 60/210 - Subtract the two like fractions:
20/210 - 60/210 = 20 - 60/210 = -40/210 - After reducing the fraction, the answer is -4/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42-10/35 4/42-20/35 4/84-10/35 4/42-10/70 12/42-10/35 4/42-30/35 20/42-10/35 4/42-50/35 28/42-10/35 4/42-70/35