Subtract 9/64 from 42/84
42/84 - 9/64 is 23/64.
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,
42/84 = 42 × 16/84 × 16 = 672/1344 - Likewise, for the 2nd fraction, since 64 × 21 = 1344,
9/64 = 9 × 21/64 × 21 = 189/1344 - Subtract the two like fractions:
672/1344 - 189/1344 = 672 - 189/1344 = 483/1344 - After reducing the fraction, the answer is 23/64
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/84-18/64 42/84-27/64 42/84-45/64 42/84-63/64