Subtract 4/42 from 3/32
3/32 - 4/42 is -1/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 32 and 42 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 32 × 21 = 672,
3/32 = 3 × 21/32 × 21 = 63/672 - Likewise, for the 2nd fraction, since 42 × 16 = 672,
4/42 = 4 × 16/42 × 16 = 64/672 - Subtract the two like fractions:
63/672 - 64/672 = 63 - 64/672 = -1/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/32-4/42 3/32-8/42 3/64-4/42 3/32-4/84 9/32-4/42 3/32-12/42 3/96-4/42 15/32-4/42 3/32-20/42 21/32-4/42 3/32-28/42