Subtract 2/42 from 2/64
2/64 - 2/42 is -11/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 64 and 42 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 64 × 21 = 1344,
2/64 = 2 × 21/64 × 21 = 42/1344 - Likewise, for the 2nd fraction, since 42 × 32 = 1344,
2/42 = 2 × 32/42 × 32 = 64/1344 - Subtract the two like fractions:
42/1344 - 64/1344 = 42 - 64/1344 = -22/1344 - After reducing the fraction, the answer is -11/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/64-2/42 2/64-4/42 2/64-2/84 6/64-2/42 2/64-6/42 10/64-2/42 2/64-10/42 14/64-2/42 2/64-14/42