Subtract 56/8 from 18/30
1st number: 18/30, 2nd number: 7 0/8
18/30 - 56/8 is -32/5.
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,
18/30 = 18 × 4/30 × 4 = 72/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
56/8 = 56 × 15/8 × 15 = 840/120 - Subtract the two like fractions:
72/120 - 840/120 = 72 - 840/120 = -768/120 - After reducing the fraction, the answer is -32/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-56/8 18/60-56/8 18/30-56/16 54/30-56/8 18/90-56/8 18/30-56/24 90/30-56/8 18/30-56/40