Subtract 9/63 from 18/30
18/30 - 9/63 is 16/35.
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,
18/30 = 18 × 21/30 × 21 = 378/630 - Likewise, for the 2nd fraction, since 63 × 10 = 630,
9/63 = 9 × 10/63 × 10 = 90/630 - Subtract the two like fractions:
378/630 - 90/630 = 378 - 90/630 = 288/630 - After reducing the fraction, the answer is 16/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-9/63 18/30-18/63 18/60-9/63 54/30-9/63 18/30-27/63 18/90-9/63 90/30-9/63 18/30-45/63