Subtract 21/36 from 84/40
1st number: 2 4/40, 2nd number: 21/36
84/40 - 21/36 is 91/60.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 36 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
84/40 = 84 × 9/40 × 9 = 756/360 - Likewise, for the 2nd fraction, since 36 × 10 = 360,
21/36 = 21 × 10/36 × 10 = 210/360 - Subtract the two like fractions:
756/360 - 210/360 = 756 - 210/360 = 546/360 - After reducing the fraction, the answer is 91/60
- In mixed form: 131/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/40-42/36 84/80-21/36 84/40-21/72 84/40-63/36