Subtract 3/45 from 32/20
1st number: 1 12/20, 2nd number: 3/45
32/20 - 3/45 is 23/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 45 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
32/20 = 32 × 9/20 × 9 = 288/180 - Likewise, for the 2nd fraction, since 45 × 4 = 180,
3/45 = 3 × 4/45 × 4 = 12/180 - Subtract the two like fractions:
288/180 - 12/180 = 288 - 12/180 = 276/180 - After reducing the fraction, the answer is 23/15
- In mixed form: 18/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/20-3/45 32/20-6/45 32/40-3/45 32/20-3/90 96/20-3/45 32/20-9/45 32/60-3/45 32/20-15/45 32/20-21/45