Subtract 4/5 from 16/84
16/84 - 4/5 is -64/105.
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,
16/84 = 16 × 5/84 × 5 = 80/420 - Likewise, for the 2nd fraction, since 5 × 84 = 420,
4/5 = 4 × 84/5 × 84 = 336/420 - Subtract the two like fractions:
80/420 - 336/420 = 80 - 336/420 = -256/420 - After reducing the fraction, the answer is -64/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/84-4/5 16/84-8/5 16/84-4/10 48/84-4/5 16/84-12/5 16/84-4/15 80/84-4/5 16/84-20/5 16/84-4/25 16/84-28/5 16/84-4/35