Subtract 10/21 from 50/30
1st number: 1 20/30, 2nd number: 10/21
50/30 - 10/21 is 25/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 21 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
50/30 = 50 × 7/30 × 7 = 350/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
10/21 = 10 × 10/21 × 10 = 100/210 - Subtract the two like fractions:
350/210 - 100/210 = 350 - 100/210 = 250/210 - After reducing the fraction, the answer is 25/21
- In mixed form: 14/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/30-20/21 50/60-10/21 50/30-10/42 50/30-30/21 50/90-10/21 50/30-10/63 50/30-50/21 50/30-70/21