Subtract 49/8 from 80/84
1st number: 80/84, 2nd number: 6 1/8
80/84 - 49/8 is -869/168.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 8 is 168
Next, find the equivalent fraction of both fractional numbers with denominator 168 - For the 1st fraction, since 84 × 2 = 168,
80/84 = 80 × 2/84 × 2 = 160/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
49/8 = 49 × 21/8 × 21 = 1029/168 - Subtract the two like fractions:
160/168 - 1029/168 = 160 - 1029/168 = -869/168
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-98/8 80/84-49/16 80/84-49/24 80/84-49/40 80/84-49/56