Subtract 72/90 from 2/9
2/9 - 72/90 is -26/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 9 × 10 = 90,
2/9 = 2 × 10/9 × 10 = 20/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
72/90 = 72 × 1/90 × 1 = 72/90 - Subtract the two like fractions:
20/90 - 72/90 = 20 - 72/90 = -52/90 - After reducing the fraction, the answer is -26/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/9-72/90 2/18-72/90 6/9-72/90 2/27-72/90 10/9-72/90 2/45-72/90 14/9-72/90 2/63-72/90