Subtract 3/27 from 40/84
40/84 - 3/27 is 23/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 27 is 756
Next, find the equivalent fraction of both fractional numbers with denominator 756 - For the 1st fraction, since 84 × 9 = 756,
40/84 = 40 × 9/84 × 9 = 360/756 - Likewise, for the 2nd fraction, since 27 × 28 = 756,
3/27 = 3 × 28/27 × 28 = 84/756 - Subtract the two like fractions:
360/756 - 84/756 = 360 - 84/756 = 276/756 - After reducing the fraction, the answer is 23/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-3/27 40/84-6/27 40/84-3/54 40/84-9/27 40/84-3/81 40/84-15/27 40/84-21/27