Subtract 3/45 from 72/10
1st number: 7 2/10, 2nd number: 3/45
72/10 - 3/45 is 107/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
72/10 = 72 × 9/10 × 9 = 648/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
3/45 = 3 × 2/45 × 2 = 6/90 - Subtract the two like fractions:
648/90 - 6/90 = 648 - 6/90 = 642/90 - After reducing the fraction, the answer is 107/15
- In mixed form: 72/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/10-6/45 72/20-3/45 72/10-3/90 72/10-9/45 72/30-3/45 72/10-15/45 72/50-3/45 72/10-21/45 72/70-3/45