Subtract 63/40 from 10/30
1st number: 10/30, 2nd number: 1 23/40
10/30 - 63/40 is -149/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
10/30 = 10 × 4/30 × 4 = 40/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Subtract the two like fractions:
40/120 - 189/120 = 40 - 189/120 = -149/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/30-63/40 10/60-63/40 10/30-63/80 10/90-63/40 50/30-63/40 70/30-63/40