Subtract 9/63 from 18/45
18/45 - 9/63 is 9/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 45 × 7 = 315,
18/45 = 18 × 7/45 × 7 = 126/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
9/63 = 9 × 5/63 × 5 = 45/315 - Subtract the two like fractions:
126/315 - 45/315 = 126 - 45/315 = 81/315 - After reducing the fraction, the answer is 9/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/45-9/63 18/45-18/63 18/90-9/63 54/45-9/63 18/45-27/63 90/45-9/63 18/45-45/63