Subtract 84/18 from 56/63
1st number: 56/63, 2nd number: 4 12/18
56/63 - 84/18 is -34/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 18 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 63 × 2 = 126,
56/63 = 56 × 2/63 × 2 = 112/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Subtract the two like fractions:
112/126 - 588/126 = 112 - 588/126 = -476/126 - After reducing the fraction, the answer is -34/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/63-84/36 56/63-84/54 56/63-84/90