Subtract 30/6 from 21/5
1st number: 4 1/5, 2nd number: 5 0/6
21/5 - 30/6 is -4/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 6 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 5 × 6 = 30,
21/5 = 21 × 6/5 × 6 = 126/30 - Likewise, for the 2nd fraction, since 6 × 5 = 30,
30/6 = 30 × 5/6 × 5 = 150/30 - Subtract the two like fractions:
126/30 - 150/30 = 126 - 150/30 = -24/30 - After reducing the fraction, the answer is -4/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5-30/6 21/5-60/6 21/10-30/6 21/5-30/12 63/5-30/6 21/5-90/6 21/15-30/6 21/5-30/18 21/25-30/6 21/35-30/6 21/5-30/42