Subtract 9/72 from 84/80
1st number: 1 4/80, 2nd number: 9/72
84/80 - 9/72 is 37/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 80 and 72 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 80 × 9 = 720,
84/80 = 84 × 9/80 × 9 = 756/720 - Likewise, for the 2nd fraction, since 72 × 10 = 720,
9/72 = 9 × 10/72 × 10 = 90/720 - Subtract the two like fractions:
756/720 - 90/720 = 756 - 90/720 = 666/720 - After reducing the fraction, the answer is 37/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/80-18/72 84/80-27/72 84/80-45/72 84/80-63/72