Subtract 8/63 from 7/45
7/45 - 8/63 is 1/35.
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,
7/45 = 7 × 7/45 × 7 = 49/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
8/63 = 8 × 5/63 × 5 = 40/315 - Subtract the two like fractions:
49/315 - 40/315 = 49 - 40/315 = 9/315 - After reducing the fraction, the answer is 1/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/45-8/63 7/45-16/63 7/90-8/63 21/45-8/63 7/45-24/63 35/45-8/63 7/45-40/63 49/45-8/63 7/45-56/63