Subtract 81/18 from 10/4
1st number: 2 2/4, 2nd number: 4 9/18
10/4 - 81/18 is -2/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
10/4 = 10 × 9/4 × 9 = 90/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
81/18 = 81 × 2/18 × 2 = 162/36 - Subtract the two like fractions:
90/36 - 162/36 = 90 - 162/36 = -72/36 - After reducing the fraction, the answer is -2/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/4-81/18 10/8-81/18 10/4-81/36 30/4-81/18 10/12-81/18 10/4-81/54 50/4-81/18 10/20-81/18 10/4-81/90 70/4-81/18 10/28-81/18