Subtract 42/10 from 1/7
1st number: 1/7, 2nd number: 4 2/10
1/7 - 42/10 is -142/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 10 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 7 × 10 = 70,
1/7 = 1 × 10/7 × 10 = 10/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
42/10 = 42 × 7/10 × 7 = 294/70 - Subtract the two like fractions:
10/70 - 294/70 = 10 - 294/70 = -284/70 - After reducing the fraction, the answer is -142/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-42/10 1/7-84/10 1/14-42/10 1/7-42/20 3/7-42/10 1/21-42/10 1/7-42/30 5/7-42/10 1/35-42/10 1/7-42/50 1/49-42/10 1/7-42/70