Subtract 15/10 from 84/7
1st number: 12 0/7, 2nd number: 1 5/10
84/7 - 15/10 is 21/2.
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,
84/7 = 84 × 10/7 × 10 = 840/70 - Likewise, for the 2nd fraction, since 10 × 7 = 70,
15/10 = 15 × 7/10 × 7 = 105/70 - Subtract the two like fractions:
840/70 - 105/70 = 840 - 105/70 = 735/70 - After reducing the fraction, the answer is 21/2
- In mixed form: 101/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-30/10 84/14-15/10 84/7-15/20 84/7-45/10 84/21-15/10 84/7-15/30 84/7-75/10 84/35-15/10 84/7-15/50 84/49-15/10 84/7-15/70