Subtract 80/84 from 50/30
1st number: 1 20/30, 2nd number: 80/84
50/30 - 80/84 is 5/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 84 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 30 × 14 = 420,
50/30 = 50 × 14/30 × 14 = 700/420 - Likewise, for the 2nd fraction, since 84 × 5 = 420,
80/84 = 80 × 5/84 × 5 = 400/420 - Subtract the two like fractions:
700/420 - 400/420 = 700 - 400/420 = 300/420 - After reducing the fraction, the answer is 5/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/60-80/84 50/90-80/84