Subtract 40/6 from 84/63
1st number: 1 21/63, 2nd number: 6 4/6
84/63 - 40/6 is -16/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 6 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
84/63 = 84 × 2/63 × 2 = 168/126 - Likewise, for the 2nd fraction, since 6 × 21 = 126,
40/6 = 40 × 21/6 × 21 = 840/126 - Subtract the two like fractions:
168/126 - 840/126 = 168 - 840/126 = -672/126 - After reducing the fraction, the answer is -16/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63-80/6 84/63-40/12 84/63-40/18 84/63-40/30 84/63-40/42