Subtract 28/42 from 1/10
1/10 - 28/42 is -17/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
1/10 = 1 × 21/10 × 21 = 21/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
28/42 = 28 × 5/42 × 5 = 140/210 - Subtract the two like fractions:
21/210 - 140/210 = 21 - 140/210 = -119/210 - After reducing the fraction, the answer is -17/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/10-28/42 1/10-56/42 1/20-28/42 1/10-28/84 3/10-28/42 1/10-84/42 1/30-28/42 5/10-28/42 1/50-28/42 7/10-28/42 1/70-28/42