Subtract 9/42 from 75/10
1st number: 7 5/10, 2nd number: 9/42
75/10 - 9/42 is 51/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 10 × 21 = 210,
75/10 = 75 × 21/10 × 21 = 1575/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
9/42 = 9 × 5/42 × 5 = 45/210 - Subtract the two like fractions:
1575/210 - 45/210 = 1575 - 45/210 = 1530/210 - After reducing the fraction, the answer is 51/7
- In mixed form: 72/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 75/10-18/42 75/20-9/42 75/10-9/84 75/10-27/42 75/30-9/42 75/10-45/42 75/50-9/42 75/10-63/42 75/70-9/42