Subtract 84/3 from 40/84
1st number: 40/84, 2nd number: 28 0/3
40/84 - 84/3 is -578/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 84 × 1 = 84,
40/84 = 40 × 1/84 × 1 = 40/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
84/3 = 84 × 28/3 × 28 = 2352/84 - Subtract the two like fractions:
40/84 - 2352/84 = 40 - 2352/84 = -2312/84 - After reducing the fraction, the answer is -578/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-84/3 40/84-84/6 40/84-84/9 40/84-84/15 40/84-84/21