Subtract 25/10 from 42/7
1st number: 6 0/7, 2nd number: 2 5/10
42/7 - 25/10 is 7/2.
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,
42/7 = 42 × 10/7 × 10 = 420/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
25/10 = 25 × 7/10 × 7 = 175/70 - Subtract the two like fractions:
420/70 - 175/70 = 420 - 175/70 = 245/70 - After reducing the fraction, the answer is 7/2
- In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-25/10 42/7-50/10 42/14-25/10 42/7-25/20 42/7-75/10 42/21-25/10 42/7-25/30 42/35-25/10 42/7-25/50 42/49-25/10 42/7-25/70