Subtract 72/8 from 72/10
1st number: 7 2/10, 2nd number: 9 0/8
72/10 - 72/8 is -9/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 8 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
72/10 = 72 × 4/10 × 4 = 288/40 - Likewise, for the 2nd fraction, since 8 × 5 = 40,
72/8 = 72 × 5/8 × 5 = 360/40 - Subtract the two like fractions:
288/40 - 360/40 = 288 - 360/40 = -72/40 - After reducing the fraction, the answer is -9/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/20-72/8 72/10-72/16 72/30-72/8 72/10-72/24 72/50-72/8 72/10-72/40 72/70-72/8 72/10-72/56