Subtract 20/5 from 7/72
1st number: 7/72, 2nd number: 4 0/5
7/72 - 20/5 is -281/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 5 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
7/72 = 7 × 5/72 × 5 = 35/360 - Likewise, for the 2nd fraction, since 5 × 72 = 360,
20/5 = 20 × 72/5 × 72 = 1440/360 - Subtract the two like fractions:
35/360 - 1440/360 = 35 - 1440/360 = -1405/360 - After reducing the fraction, the answer is -281/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/72-20/5 7/72-40/5 7/72-20/10 21/72-20/5 7/72-60/5 7/72-20/15 35/72-20/5 7/72-20/25 49/72-20/5 7/72-20/35