Subtract 24/42 from 30/10
1st number: 3 0/10, 2nd number: 24/42
30/10 - 24/42 is 17/7.
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,
30/10 = 30 × 21/10 × 21 = 630/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
24/42 = 24 × 5/42 × 5 = 120/210 - Subtract the two like fractions:
630/210 - 120/210 = 630 - 120/210 = 510/210 - After reducing the fraction, the answer is 17/7
- In mixed form: 23/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/10-24/42 30/10-48/42 30/20-24/42 30/10-24/84 90/10-24/42 30/10-72/42 30/50-24/42 30/70-24/42