Subtract 90/72 from 9/3
1st number: 3 0/3, 2nd number: 1 18/72
9/3 - 90/72 is 7/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 3 × 24 = 72,
9/3 = 9 × 24/3 × 24 = 216/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
90/72 = 90 × 1/72 × 1 = 90/72 - Subtract the two like fractions:
216/72 - 90/72 = 216 - 90/72 = 126/72 - After reducing the fraction, the answer is 7/4
- In mixed form: 13/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/3-90/72 9/6-90/72 27/3-90/72 45/3-90/72 9/15-90/72 63/3-90/72 9/21-90/72