Subtract 56/80 from 16/21
16/21 - 56/80 is 13/210.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 80 is 1680
Next, find the equivalent fraction of both fractional numbers with denominator 1680 - For the 1st fraction, since 21 × 80 = 1680,
16/21 = 16 × 80/21 × 80 = 1280/1680 - Likewise, for the 2nd fraction, since 80 × 21 = 1680,
56/80 = 56 × 21/80 × 21 = 1176/1680 - Subtract the two like fractions:
1280/1680 - 1176/1680 = 1280 - 1176/1680 = 104/1680 - After reducing the fraction, the answer is 13/210
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21-56/80 16/42-56/80 48/21-56/80 16/63-56/80 80/21-56/80