Subtract 35/10 from 7/42
1st number: 7/42, 2nd number: 3 5/10
7/42 - 35/10 is -10/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 10 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 10 × 21 = 210,
35/10 = 35 × 21/10 × 21 = 735/210 - Subtract the two like fractions:
35/210 - 735/210 = 35 - 735/210 = -700/210 - After reducing the fraction, the answer is -10/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-35/10 7/42-70/10 7/84-35/10 7/42-35/20 21/42-35/10 7/42-35/30 35/42-35/10 7/42-35/50 49/42-35/10 7/42-35/70