Subtract 75/72 from 4/5
1st number: 4/5, 2nd number: 1 3/72
4/5 - 75/72 is -29/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
4/5 = 4 × 72/5 × 72 = 288/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
75/72 = 75 × 5/72 × 5 = 375/360 - Subtract the two like fractions:
288/360 - 375/360 = 288 - 375/360 = -87/360 - After reducing the fraction, the answer is -29/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/5-75/72 4/10-75/72 12/5-75/72 4/15-75/72 20/5-75/72 4/25-75/72 28/5-75/72 4/35-75/72