Subtract 16/30 from 15/63
15/63 - 16/30 is -31/105.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 30 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
15/63 = 15 × 10/63 × 10 = 150/630 - Likewise, for the 2nd fraction, since 30 × 21 = 630,
16/30 = 16 × 21/30 × 21 = 336/630 - Subtract the two like fractions:
150/630 - 336/630 = 150 - 336/630 = -186/630 - After reducing the fraction, the answer is -31/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/63-16/30 15/63-32/30 15/63-16/60 45/63-16/30 15/63-48/30 15/63-16/90 75/63-16/30 15/63-80/30