Subtract 72/4 from 45/3
1st number: 15 0/3, 2nd number: 18 0/4
45/3 - 72/4 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 4 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 3 × 4 = 12,
45/3 = 45 × 4/3 × 4 = 180/12 - Likewise, for the 2nd fraction, since 4 × 3 = 12,
72/4 = 72 × 3/4 × 3 = 216/12 - Subtract the two like fractions:
180/12 - 216/12 = 180 - 216/12 = -36/12 - After reducing the fraction, the answer is -3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/3-72/4 45/6-72/4 45/3-72/8 45/9-72/4 45/3-72/12 45/15-72/4 45/3-72/20 45/21-72/4 45/3-72/28