Subtract 16/90 from 56/21
1st number: 2 14/21, 2nd number: 16/90
56/21 - 16/90 is 112/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 90 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 21 × 30 = 630,
56/21 = 56 × 30/21 × 30 = 1680/630 - Likewise, for the 2nd fraction, since 90 × 7 = 630,
16/90 = 16 × 7/90 × 7 = 112/630 - Subtract the two like fractions:
1680/630 - 112/630 = 1680 - 112/630 = 1568/630 - After reducing the fraction, the answer is 112/45
- In mixed form: 222/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/21-32/90 56/42-16/90 56/21-48/90 56/63-16/90 56/21-80/90