Subtract 90/6 from 54/45
1st number: 1 9/45, 2nd number: 15 0/6
54/45 - 90/6 is -69/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 6 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
54/45 = 54 × 2/45 × 2 = 108/90 - Likewise, for the 2nd fraction, since 6 × 15 = 90,
90/6 = 90 × 15/6 × 15 = 1350/90 - Subtract the two like fractions:
108/90 - 1350/90 = 108 - 1350/90 = -1242/90 - After reducing the fraction, the answer is -69/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/90-90/6 54/45-90/12 54/45-90/18 54/45-90/30 54/45-90/42