Subtract 45/3 from 30/4
1st number: 7 2/4, 2nd number: 15 0/3
30/4 - 45/3 is -15/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 3 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 4 × 3 = 12,
30/4 = 30 × 3/4 × 3 = 90/12 - Likewise, for the 2nd fraction, since 3 × 4 = 12,
45/3 = 45 × 4/3 × 4 = 180/12 - Subtract the two like fractions:
90/12 - 180/12 = 90 - 180/12 = -90/12 - 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: 60/4-45/3 30/4-90/3 30/8-45/3 30/4-45/6 90/4-45/3 30/12-45/3 30/4-45/9 30/20-45/3 30/4-45/15 30/28-45/3 30/4-45/21