Subtract 9/12 from 54/45
1st number: 1 9/45, 2nd number: 9/12
54/45 - 9/12 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 12 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 45 × 4 = 180,
54/45 = 54 × 4/45 × 4 = 216/180 - Likewise, for the 2nd fraction, since 12 × 15 = 180,
9/12 = 9 × 15/12 × 15 = 135/180 - Subtract the two like fractions:
216/180 - 135/180 = 216 - 135/180 = 81/180 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/45-18/12 54/90-9/12 54/45-9/24 54/45-27/12 54/45-9/36 54/45-45/12 54/45-9/60 54/45-63/12 54/45-9/84