Subtract 98/72 from 30/50
1st number: 30/50, 2nd number: 1 26/72
30/50 - 98/72 is -137/180.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 50 × 36 = 1800,
30/50 = 30 × 36/50 × 36 = 1080/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
98/72 = 98 × 25/72 × 25 = 2450/1800 - Subtract the two like fractions:
1080/1800 - 2450/1800 = 1080 - 2450/1800 = -1370/1800 - After reducing the fraction, the answer is -137/180
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50-98/72 90/50-98/72