Subtract 48/63 from 45/30
1st number: 1 15/30, 2nd number: 48/63
45/30 - 48/63 is 31/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 63 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 30 × 21 = 630,
45/30 = 45 × 21/30 × 21 = 945/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
48/63 = 48 × 10/63 × 10 = 480/630 - Subtract the two like fractions:
945/630 - 480/630 = 945 - 480/630 = 465/630 - After reducing the fraction, the answer is 31/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/30-48/63 45/30-96/63 45/60-48/63 45/90-48/63