Subtract 7/63 from 1/45
1/45 - 7/63 is -4/45.
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,
1/45 = 1 × 7/45 × 7 = 7/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
7/63 = 7 × 5/63 × 5 = 35/315 - Subtract the two like fractions:
7/315 - 35/315 = 7 - 35/315 = -28/315 - After reducing the fraction, the answer is -4/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/45-7/63 1/45-14/63 1/90-7/63 3/45-7/63 1/45-21/63 5/45-7/63 1/45-35/63 7/45-7/63 1/45-49/63