Subtract 18/21 from 16/2
1st number: 8 0/2, 2nd number: 18/21
16/2 - 18/21 is 50/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 2 × 21 = 42,
16/2 = 16 × 21/2 × 21 = 336/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
18/21 = 18 × 2/21 × 2 = 36/42 - Subtract the two like fractions:
336/42 - 36/42 = 336 - 36/42 = 300/42 - After reducing the fraction, the answer is 50/7
- In mixed form: 71/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/2-18/21 16/2-36/21 16/4-18/21 16/2-18/42 48/2-18/21 16/2-54/21 16/6-18/21 16/2-18/63 80/2-18/21 16/2-90/21 16/10-18/21 16/14-18/21