Subtract 63/84 from 18/5
1st number: 3 3/5, 2nd number: 63/84
18/5 - 63/84 is 57/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 5 × 84 = 420,
18/5 = 18 × 84/5 × 84 = 1512/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
63/84 = 63 × 5/84 × 5 = 315/420 - Subtract the two like fractions:
1512/420 - 315/420 = 1512 - 315/420 = 1197/420 - After reducing the fraction, the answer is 57/20
- In mixed form: 217/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/5-63/84 18/10-63/84 54/5-63/84 18/15-63/84 90/5-63/84 18/25-63/84 18/35-63/84