Subtract 54/5 from 1/84
1st number: 1/84, 2nd number: 10 4/5
1/84 - 54/5 is -4531/420.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 5 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
1/84 = 1 × 5/84 × 5 = 5/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
54/5 = 54 × 84/5 × 84 = 4536/420 - Subtract the two like fractions:
5/420 - 4536/420 = 5 - 4536/420 = -4531/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/84-54/5 1/84-54/10 3/84-54/5 1/84-54/15 5/84-54/5 1/84-54/25 7/84-54/5 1/84-54/35