Subtract 35/45 from 18/63
18/63 - 35/45 is -31/63.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 45 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
18/63 = 18 × 5/63 × 5 = 90/315 - Likewise, for the 2nd fraction, since 45 × 7 = 315,
35/45 = 35 × 7/45 × 7 = 245/315 - Subtract the two like fractions:
90/315 - 245/315 = 90 - 245/315 = -155/315 - After reducing the fraction, the answer is -31/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/63-35/45 18/63-70/45 18/63-35/90 54/63-35/45 90/63-35/45