Subtract 24/42 from 80/30
1st number: 2 20/30, 2nd number: 24/42
80/30 - 24/42 is 44/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 42 is 210
Next, find the equivalent fraction of both fractional numbers with denominator 210 - For the 1st fraction, since 30 × 7 = 210,
80/30 = 80 × 7/30 × 7 = 560/210 - Likewise, for the 2nd fraction, since 42 × 5 = 210,
24/42 = 24 × 5/42 × 5 = 120/210 - Subtract the two like fractions:
560/210 - 120/210 = 560 - 120/210 = 440/210 - After reducing the fraction, the answer is 44/21
- In mixed form: 22/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-48/42 80/60-24/42 80/30-24/84 80/30-72/42 80/90-24/42