Subtract 25/32 from 4/42
4/42 - 25/32 is -461/672.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 32 is 672
Next, find the equivalent fraction of both fractional numbers with denominator 672 - For the 1st fraction, since 42 × 16 = 672,
4/42 = 4 × 16/42 × 16 = 64/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
25/32 = 25 × 21/32 × 21 = 525/672 - Subtract the two like fractions:
64/672 - 525/672 = 64 - 525/672 = -461/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42-25/32 4/42-50/32 4/84-25/32 4/42-25/64 12/42-25/32 4/42-75/32 4/42-25/96 20/42-25/32 28/42-25/32