Subtract 7/64 from 7/84
7/84 - 7/64 is -5/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 84 × 16 = 1344,
7/84 = 7 × 16/84 × 16 = 112/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
7/64 = 7 × 21/64 × 21 = 147/1344 - Subtract the two like fractions:
112/1344 - 147/1344 = 112 - 147/1344 = -35/1344 - After reducing the fraction, the answer is -5/192
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/84-7/64 7/84-14/64 21/84-7/64 7/84-21/64 35/84-7/64 7/84-35/64 49/84-7/64 7/84-49/64