Subtract 96/30 from 7/21
1st number: 7/21, 2nd number: 3 6/30
7/21 - 96/30 is -43/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 30 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 21 × 10 = 210,
7/21 = 7 × 10/21 × 10 = 70/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
96/30 = 96 × 7/30 × 7 = 672/210 - Subtract the two like fractions:
70/210 - 672/210 = 70 - 672/210 = -602/210 - After reducing the fraction, the answer is -43/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/21-96/30 7/42-96/30 7/21-96/60 7/63-96/30 7/21-96/90 35/21-96/30 49/21-96/30