Subtract 96/30 from 21/40
1st number: 21/40, 2nd number: 3 6/30
21/40 - 96/30 is -107/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
96/30 = 96 × 4/30 × 4 = 384/120 - Subtract the two like fractions:
63/120 - 384/120 = 63 - 384/120 = -321/120 - After reducing the fraction, the answer is -107/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/40-96/30 21/80-96/30 21/40-96/60 63/40-96/30 21/40-96/90