Subtract 30/18 from 45/10
1st number: 4 5/10, 2nd number: 1 12/18
45/10 - 30/18 is 17/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 10 × 9 = 90,
45/10 = 45 × 9/10 × 9 = 405/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Subtract the two like fractions:
405/90 - 150/90 = 405 - 150/90 = 255/90 - After reducing the fraction, the answer is 17/6
- In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/10-30/18 45/10-60/18 45/20-30/18 45/10-30/36 45/10-90/18 45/30-30/18 45/10-30/54 45/50-30/18 45/10-30/90 45/70-30/18