Subtract 32/30 from 4/21
1st number: 4/21, 2nd number: 1 2/30
4/21 - 32/30 is -92/105.
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,
4/21 = 4 × 10/21 × 10 = 40/210 - Likewise, for the 2nd fraction, since 30 × 7 = 210,
32/30 = 32 × 7/30 × 7 = 224/210 - Subtract the two like fractions:
40/210 - 224/210 = 40 - 224/210 = -184/210 - After reducing the fraction, the answer is -92/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/21-32/30 4/21-64/30 4/42-32/30 4/21-32/60 12/21-32/30 4/21-96/30 4/63-32/30 4/21-32/90 20/21-32/30 28/21-32/30