Subtract 7/10 from 45/18
1st number: 2 9/18, 2nd number: 7/10
45/18 - 7/10 is 9/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 10 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Likewise, for the 2nd fraction, since 10 × 9 = 90,
7/10 = 7 × 9/10 × 9 = 63/90 - Subtract the two like fractions:
225/90 - 63/90 = 225 - 63/90 = 162/90 - After reducing the fraction, the answer is 9/5
- In mixed form: 14/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/18-7/10 45/18-14/10 45/36-7/10 45/18-7/20 45/18-21/10 45/54-7/10 45/18-7/30 45/18-35/10 45/90-7/10 45/18-7/50 45/18-49/10 45/18-7/70