Subtract 63/8 from 80/30
1st number: 2 20/30, 2nd number: 7 7/8
80/30 - 63/8 is -125/24.
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,
80/30 = 80 × 4/30 × 4 = 320/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
63/8 = 63 × 15/8 × 15 = 945/120 - Subtract the two like fractions:
320/120 - 945/120 = 320 - 945/120 = -625/120 - After reducing the fraction, the answer is -125/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60-63/8 80/30-63/16 80/90-63/8 80/30-63/24 80/30-63/40 80/30-63/56