Subtract 30/45 from 45/15
1st number: 3 0/15, 2nd number: 30/45
45/15 - 30/45 is 7/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
45/15 = 45 × 3/15 × 3 = 135/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
30/45 = 30 × 1/45 × 1 = 30/45 - Subtract the two like fractions:
135/45 - 30/45 = 135 - 30/45 = 105/45 - After reducing the fraction, the answer is 7/3
- In mixed form: 21/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15-30/45 45/15-60/45 45/30-30/45 45/15-30/90 45/15-90/45 45/75-30/45