Subtract 72/10 from 36/9
1st number: 4 0/9, 2nd number: 7 2/10
36/9 - 72/10 is -16/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
36/9 = 36 × 10/9 × 10 = 360/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Subtract the two like fractions:
360/90 - 648/90 = 360 - 648/90 = -288/90 - After reducing the fraction, the answer is -16/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/9-72/10 36/18-72/10 36/9-72/20 36/27-72/10 36/9-72/30 36/45-72/10 36/9-72/50 36/63-72/10 36/9-72/70