Subtract 2/9 from 90/72
1st number: 1 18/72, 2nd number: 2/9
90/72 - 2/9 is 37/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
2/9 = 2 × 8/9 × 8 = 16/72 - Subtract the two like fractions:
90/72 - 16/72 = 90 - 16/72 = 74/72 - After reducing the fraction, the answer is 37/36
- In mixed form: 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/72-4/9 90/72-2/18 90/72-6/9 90/72-2/27 90/72-10/9 90/72-2/45 90/72-14/9 90/72-2/63