Subtract 84/18 from 12/63
1st number: 12/63, 2nd number: 4 12/18
12/63 - 84/18 is -94/21.
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,
12/63 = 12 × 2/63 × 2 = 24/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
84/18 = 84 × 7/18 × 7 = 588/126 - Subtract the two like fractions:
24/126 - 588/126 = 24 - 588/126 = -564/126 - After reducing the fraction, the answer is -94/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/63-84/18 12/63-84/36 36/63-84/18 12/63-84/54 60/63-84/18 12/63-84/90 84/63-84/18