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