Subtract 10/35 from 7/42
7/42 - 10/35 is -5/42.
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,
10/35 = 10 × 6/35 × 6 = 60/210 - Subtract the two like fractions:
35/210 - 60/210 = 35 - 60/210 = -25/210 - After reducing the fraction, the answer is -5/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-10/35 7/42-20/35 7/84-10/35 7/42-10/70 21/42-10/35 7/42-30/35 35/42-10/35 7/42-50/35 49/42-10/35 7/42-70/35