Subtract 49/32 from 25/42
1st number: 25/42, 2nd number: 1 17/32
25/42 - 49/32 is -629/672.
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,
25/42 = 25 × 16/42 × 16 = 400/672 - Likewise, for the 2nd fraction, since 32 × 21 = 672,
49/32 = 49 × 21/32 × 21 = 1029/672 - Subtract the two like fractions:
400/672 - 1029/672 = 400 - 1029/672 = -629/672
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/42-49/32 25/42-98/32 25/84-49/32 25/42-49/64 75/42-49/32 25/42-49/96