Subtract 8/45 from 80/30
1st number: 2 20/30, 2nd number: 8/45
80/30 - 8/45 is 112/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 45 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
80/30 = 80 × 3/30 × 3 = 240/90 - Likewise, for the 2nd fraction, since 45 × 2 = 90,
8/45 = 8 × 2/45 × 2 = 16/90 - Subtract the two like fractions:
240/90 - 16/90 = 240 - 16/90 = 224/90 - After reducing the fraction, the answer is 112/45
- In mixed form: 222/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/30-16/45 80/60-8/45 80/30-8/90 80/30-24/45 80/90-8/45 80/30-40/45 80/30-56/45