Subtract 15/8 from 84/7
1st number: 12 0/7, 2nd number: 1 7/8
84/7 - 15/8 is 81/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 7 × 8 = 56,
84/7 = 84 × 8/7 × 8 = 672/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
15/8 = 15 × 7/8 × 7 = 105/56 - Subtract the two like fractions:
672/56 - 105/56 = 672 - 105/56 = 567/56 - After reducing the fraction, the answer is 81/8
- In mixed form: 101/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/7-30/8 84/14-15/8 84/7-15/16 84/7-45/8 84/21-15/8 84/7-15/24 84/7-75/8 84/35-15/8 84/7-15/40 84/49-15/8 84/7-15/56