Subtract 20/40 from 84/36
1st number: 2 12/36, 2nd number: 20/40
84/36 - 20/40 is 11/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 36 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 36 × 10 = 360,
84/36 = 84 × 10/36 × 10 = 840/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
20/40 = 20 × 9/40 × 9 = 180/360 - Subtract the two like fractions:
840/360 - 180/360 = 840 - 180/360 = 660/360 - After reducing the fraction, the answer is 11/6
- In mixed form: 15/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/72-20/40 84/36-20/80 84/36-60/40