Subtract 16/6 from 81/63
1st number: 1 18/63, 2nd number: 2 4/6
81/63 - 16/6 is -29/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 6 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
81/63 = 81 × 2/63 × 2 = 162/126 - Likewise, for the 2nd fraction, since 6 × 21 = 126,
16/6 = 16 × 21/6 × 21 = 336/126 - Subtract the two like fractions:
162/126 - 336/126 = 162 - 336/126 = -174/126 - After reducing the fraction, the answer is -29/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/63-32/6 81/63-16/12 81/63-48/6 81/63-16/18 81/63-80/6 81/63-16/30 81/63-16/42