Subtract 81/7 from 54/10
1st number: 5 4/10, 2nd number: 11 4/7
54/10 - 81/7 is -216/35.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 7 is 70
Next, find the equivalent fraction of both fractional numbers with denominator 70 - For the 1st fraction, since 10 × 7 = 70,
54/10 = 54 × 7/10 × 7 = 378/70 - Likewise, for the 2nd fraction, since 7 × 10 = 70,
81/7 = 81 × 10/7 × 10 = 810/70 - Subtract the two like fractions:
378/70 - 810/70 = 378 - 810/70 = -432/70 - After reducing the fraction, the answer is -216/35
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/20-81/7 54/10-81/14 54/30-81/7 54/10-81/21 54/50-81/7 54/10-81/35 54/70-81/7 54/10-81/49