Subtract 54/9 from 18/90
1st number: 18/90, 2nd number: 6 0/9
18/90 - 54/9 is -29/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 90 and 9 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 90 × 1 = 90,
18/90 = 18 × 1/90 × 1 = 18/90 - Likewise, for the 2nd fraction, since 9 × 10 = 90,
54/9 = 54 × 10/9 × 10 = 540/90 - Subtract the two like fractions:
18/90 - 540/90 = 18 - 540/90 = -522/90 - After reducing the fraction, the answer is -29/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/90-54/9 18/90-54/18 54/90-54/9 18/90-54/27 18/90-54/45 18/90-54/63