Subtract 3/10 from 40/63
40/63 - 3/10 is 211/630.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 10 is 630
Next, find the equivalent fraction of both fractional numbers with denominator 630 - For the 1st fraction, since 63 × 10 = 630,
40/63 = 40 × 10/63 × 10 = 400/630 - Likewise, for the 2nd fraction, since 10 × 63 = 630,
3/10 = 3 × 63/10 × 63 = 189/630 - Subtract the two like fractions:
400/630 - 189/630 = 400 - 189/630 = 211/630
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/63-3/10 40/63-6/10 40/63-3/20 40/63-9/10 40/63-3/30 40/63-15/10 40/63-3/50 40/63-21/10 40/63-3/70