Subtract 15/90 from 32/20
1st number: 1 12/20, 2nd number: 15/90
32/20 - 15/90 is 43/30.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 90 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 90 × 2 = 180,
15/90 = 15 × 2/90 × 2 = 30/180 - Subtract the two like fractions:
288/180 - 30/180 = 288 - 30/180 = 258/180 - After reducing the fraction, the answer is 43/30
- In mixed form: 113/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/20-15/90 32/20-30/90 32/40-15/90 96/20-15/90 32/20-45/90 32/60-15/90 32/20-75/90