Subtract 3/64 from 7/42
7/42 - 3/64 is 23/192.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 64 is 1344
Next, find the equivalent fraction of both fractional numbers with denominator 1344 - For the 1st fraction, since 42 × 32 = 1344,
7/42 = 7 × 32/42 × 32 = 224/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
3/64 = 3 × 21/64 × 21 = 63/1344 - Subtract the two like fractions:
224/1344 - 63/1344 = 224 - 63/1344 = 161/1344 - After reducing the fraction, the answer is 23/192
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/42-3/64 7/42-6/64 7/84-3/64 21/42-3/64 7/42-9/64 35/42-3/64 7/42-15/64 49/42-3/64 7/42-21/64