Subtract 49/8 from 7/84
1st number: 7/84, 2nd number: 6 1/8
7/84 - 49/8 is -145/24.
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,
7/84 = 7 × 2/84 × 2 = 14/168 - Likewise, for the 2nd fraction, since 8 × 21 = 168,
49/8 = 49 × 21/8 × 21 = 1029/168 - Subtract the two like fractions:
14/168 - 1029/168 = 14 - 1029/168 = -1015/168 - After reducing the fraction, the answer is -145/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84-49/8 7/84-98/8 7/84-49/16 21/84-49/8 7/84-49/24 35/84-49/8 7/84-49/40 49/84-49/8 7/84-49/56