Subtract 45/4 from 30/8
1st number: 3 6/8, 2nd number: 11 1/4
30/8 - 45/4 is -15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 4 is 8
Next, find the equivalent fraction of both fractional numbers with denominator 8 - For the 1st fraction, since 8 × 1 = 8,
30/8 = 30 × 1/8 × 1 = 30/8 - Likewise, for the 2nd fraction, since 4 × 2 = 8,
45/4 = 45 × 2/4 × 2 = 90/8 - Subtract the two like fractions:
30/8 - 90/8 = 30 - 90/8 = -60/8 - After reducing the fraction, the answer is -15/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/8-45/4 30/8-90/4 30/16-45/4 30/8-45/8 90/8-45/4 30/24-45/4 30/8-45/12 30/40-45/4 30/8-45/20 30/56-45/4 30/8-45/28