Subtract 63/40 from 9/30
1st number: 9/30, 2nd number: 1 23/40
9/30 - 63/40 is -51/40.
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,
9/30 = 9 × 4/30 × 4 = 36/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
63/40 = 63 × 3/40 × 3 = 189/120 - Subtract the two like fractions:
36/120 - 189/120 = 36 - 189/120 = -153/120 - After reducing the fraction, the answer is -51/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-63/40 9/60-63/40 9/30-63/80 27/30-63/40 9/90-63/40 45/30-63/40 63/30-63/40