Subtract 81/7 from 84/5
1st number: 16 4/5, 2nd number: 11 4/7
84/5 - 81/7 is 183/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 7 is 35
Next, find the equivalent fraction of both fractional numbers with denominator 35 - For the 1st fraction, since 5 × 7 = 35,
84/5 = 84 × 7/5 × 7 = 588/35 - Likewise, for the 2nd fraction, since 7 × 5 = 35,
81/7 = 81 × 5/7 × 5 = 405/35 - Subtract the two like fractions:
588/35 - 405/35 = 588 - 405/35 = 183/35 - In mixed form: 58/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/10-81/7 84/5-81/14 84/15-81/7 84/5-81/21 84/25-81/7 84/5-81/35 84/35-81/7 84/5-81/49