Subtract 9/21 from 75/30
1st number: 2 15/30, 2nd number: 9/21
75/30 - 9/21 is 29/14.
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,
75/30 = 75 × 7/30 × 7 = 525/210 - Likewise, for the 2nd fraction, since 21 × 10 = 210,
9/21 = 9 × 10/21 × 10 = 90/210 - Subtract the two like fractions:
525/210 - 90/210 = 525 - 90/210 = 435/210 - After reducing the fraction, the answer is 29/14
- In mixed form: 21/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/30-18/21 75/60-9/21 75/30-9/42 75/30-27/21 75/90-9/21 75/30-9/63 75/30-45/21 75/30-63/21