Subtract 80/8 from 9/30
1st number: 9/30, 2nd number: 10 0/8
9/30 - 80/8 is -97/10.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
9/30 = 9 × 4/30 × 4 = 36/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
80/8 = 80 × 15/8 × 15 = 1200/120 - Subtract the two like fractions:
36/120 - 1200/120 = 36 - 1200/120 = -1164/120 - After reducing the fraction, the answer is -97/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30-80/8 9/60-80/8 9/30-80/16 27/30-80/8 9/90-80/8 9/30-80/24 45/30-80/8 9/30-80/40 63/30-80/8 9/30-80/56