Subtract 30/20 from 5/72
1st number: 5/72, 2nd number: 1 10/20
5/72 - 30/20 is -103/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
5/72 = 5 × 5/72 × 5 = 25/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
30/20 = 30 × 18/20 × 18 = 540/360 - Subtract the two like fractions:
25/360 - 540/360 = 25 - 540/360 = -515/360 - After reducing the fraction, the answer is -103/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/72-30/20 5/72-60/20 5/72-30/40 15/72-30/20 5/72-90/20 5/72-30/60 25/72-30/20 35/72-30/20