Subtract 3/6 from 40/84
40/84 - 3/6 is -1/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 6 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 6 × 14 = 84,
3/6 = 3 × 14/6 × 14 = 42/84 - Subtract the two like fractions:
40/84 - 42/84 = 40 - 42/84 = -2/84 - After reducing the fraction, the answer is -1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/84-3/6 40/84-3/12 40/84-9/6 40/84-3/18 40/84-15/6 40/84-3/30 40/84-21/6 40/84-3/42