Subtract 49/50 from 4/72
4/72 - 49/50 is -208/225.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 50 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
4/72 = 4 × 25/72 × 25 = 100/1800 - Likewise, for the 2nd fraction, since 50 × 36 = 1800,
49/50 = 49 × 36/50 × 36 = 1764/1800 - Subtract the two like fractions:
100/1800 - 1764/1800 = 100 - 1764/1800 = -1664/1800 - After reducing the fraction, the answer is -208/225
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/72-49/50 4/72-98/50 12/72-49/50 20/72-49/50 28/72-49/50