Subtract 70/72 from 45/4
1st number: 11 1/4, 2nd number: 70/72
45/4 - 70/72 is 185/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 4 × 18 = 72,
45/4 = 45 × 18/4 × 18 = 810/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
70/72 = 70 × 1/72 × 1 = 70/72 - Subtract the two like fractions:
810/72 - 70/72 = 810 - 70/72 = 740/72 - After reducing the fraction, the answer is 185/18
- In mixed form: 105/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/4-70/72 45/8-70/72 45/12-70/72 45/20-70/72 45/28-70/72