Subtract 54/9 from 90/30
1st number: 3 0/30, 2nd number: 6 0/9
90/30 - 54/9 is -3/1.
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,
90/30 = 90 × 3/30 × 3 = 270/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
54/9 = 54 × 10/9 × 10 = 540/90 - Subtract the two like fractions:
270/90 - 540/90 = 270 - 540/90 = -270/90 - After reducing the fraction, the answer is -3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/60-54/9 90/30-54/18 90/30-54/27 90/30-54/45 90/30-54/63