Subtract 8/80 from 28/30
28/30 - 8/80 is 5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 80 is 240
Next, find the equivalent fraction of both fractional numbers with denominator 240 - For the 1st fraction, since 30 × 8 = 240,
28/30 = 28 × 8/30 × 8 = 224/240 - Likewise, for the 2nd fraction, since 80 × 3 = 240,
8/80 = 8 × 3/80 × 3 = 24/240 - Subtract the two like fractions:
224/240 - 24/240 = 224 - 24/240 = 200/240 - After reducing the fraction, the answer is 5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/30-8/80 28/30-16/80 28/60-8/80 84/30-8/80 28/30-24/80 28/90-8/80 28/30-40/80 28/30-56/80