Subtract 54/9 from 45/30
1st number: 1 15/30, 2nd number: 6 0/9
45/30 - 54/9 is -9/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
45/30 = 45 × 3/30 × 3 = 135/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
54/9 = 54 × 10/9 × 10 = 540/90 - Subtract the two like fractions:
135/90 - 540/90 = 135 - 540/90 = -405/90 - After reducing the fraction, the answer is -9/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-54/9 45/60-54/9 45/30-54/18 45/90-54/9 45/30-54/27 45/30-54/45 45/30-54/63