Subtract 30/18 from 48/63
1st number: 48/63, 2nd number: 1 12/18
48/63 - 30/18 is -19/21.
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,
48/63 = 48 × 2/63 × 2 = 96/126 - Likewise, for the 2nd fraction, since 18 × 7 = 126,
30/18 = 30 × 7/18 × 7 = 210/126 - Subtract the two like fractions:
96/126 - 210/126 = 96 - 210/126 = -114/126 - After reducing the fraction, the answer is -19/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 96/63-30/18 48/63-60/18 48/63-30/36 48/63-90/18 48/63-30/54 48/63-30/90