Subtract 63/8 from 27/30
1st number: 27/30, 2nd number: 7 7/8
27/30 - 63/8 is -279/40.
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,
27/30 = 27 × 4/30 × 4 = 108/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
63/8 = 63 × 15/8 × 15 = 945/120 - Subtract the two like fractions:
108/120 - 945/120 = 108 - 945/120 = -837/120 - After reducing the fraction, the answer is -279/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-63/8 27/60-63/8 27/30-63/16 81/30-63/8 27/90-63/8 27/30-63/24 27/30-63/40 27/30-63/56