Subtract 30/80 from 50/4
1st number: 12 2/4, 2nd number: 30/80
50/4 - 30/80 is 97/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 4 × 20 = 80,
50/4 = 50 × 20/4 × 20 = 1000/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
30/80 = 30 × 1/80 × 1 = 30/80 - Subtract the two like fractions:
1000/80 - 30/80 = 1000 - 30/80 = 970/80 - After reducing the fraction, the answer is 97/8
- In mixed form: 121/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/4-60/80 50/8-30/80 50/4-90/80 50/12-30/80 50/20-30/80 50/28-30/80