Subtract 5/8 from 3/30
3/30 - 5/8 is -21/40.
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,
3/30 = 3 × 4/30 × 4 = 12/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
5/8 = 5 × 15/8 × 15 = 75/120 - Subtract the two like fractions:
12/120 - 75/120 = 12 - 75/120 = -63/120 - After reducing the fraction, the answer is -21/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/30-5/8 3/30-10/8 3/60-5/8 3/30-5/16 9/30-5/8 3/30-15/8 3/90-5/8 3/30-5/24 15/30-5/8 3/30-25/8 3/30-5/40 21/30-5/8 3/30-35/8 3/30-5/56