Subtract 18/14 from 45/20
1st number: 2 5/20, 2nd number: 1 4/14
45/20 - 18/14 is 27/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
18/14 = 18 × 10/14 × 10 = 180/140 - Subtract the two like fractions:
315/140 - 180/140 = 315 - 180/140 = 135/140 - After reducing the fraction, the answer is 27/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/20-18/14 45/20-36/14 45/40-18/14 45/20-18/28 45/20-54/14 45/60-18/14 45/20-18/42 45/20-90/14 45/20-18/70 45/20-18/98