Subtract 7/50 from 4/42
4/42 - 7/50 is -47/1050.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 50 is 1050
Next, find the equivalent fraction of both fractional numbers with denominator 1050 - For the 1st fraction, since 42 × 25 = 1050,
4/42 = 4 × 25/42 × 25 = 100/1050 - Likewise, for the 2nd fraction, since 50 × 21 = 1050,
7/50 = 7 × 21/50 × 21 = 147/1050 - Subtract the two like fractions:
100/1050 - 147/1050 = 100 - 147/1050 = -47/1050
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42-7/50 4/42-14/50 4/84-7/50 12/42-7/50 4/42-21/50 20/42-7/50 4/42-35/50 28/42-7/50 4/42-49/50