Subtract 30/18 from 45/25
1st number: 1 20/25, 2nd number: 1 12/18
45/25 - 30/18 is 2/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 18 is 450
Next, find the equivalent fraction of both fractional numbers with denominator 450 - For the 1st fraction, since 25 × 18 = 450,
45/25 = 45 × 18/25 × 18 = 810/450 - Likewise, for the 2nd fraction, since 18 × 25 = 450,
30/18 = 30 × 25/18 × 25 = 750/450 - Subtract the two like fractions:
810/450 - 750/450 = 810 - 750/450 = 60/450 - After reducing the fraction, the answer is 2/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/25-30/18 45/25-60/18 45/50-30/18 45/25-30/36 45/25-90/18 45/75-30/18 45/25-30/54 45/25-30/90