Subtract 98/8 from 16/21
1st number: 16/21, 2nd number: 12 2/8
16/21 - 98/8 is -965/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 21 × 8 = 168,
16/21 = 16 × 8/21 × 8 = 128/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
98/8 = 98 × 21/8 × 21 = 2058/168 - Subtract the two like fractions:
128/168 - 2058/168 = 128 - 2058/168 = -1930/168 - After reducing the fraction, the answer is -965/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/21-98/8 16/42-98/8 16/21-98/16 48/21-98/8 16/63-98/8 16/21-98/24 80/21-98/8 16/21-98/40 16/21-98/56