Subtract 10/81 from 54/30
1st number: 1 24/30, 2nd number: 10/81
54/30 - 10/81 is 679/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 81 is 810
Next, find the equivalent fraction of both fractional numbers with denominator 810 - For the 1st fraction, since 30 × 27 = 810,
54/30 = 54 × 27/30 × 27 = 1458/810 - Likewise, for the 2nd fraction, since 81 × 10 = 810,
10/81 = 10 × 10/81 × 10 = 100/810 - Subtract the two like fractions:
1458/810 - 100/810 = 1458 - 100/810 = 1358/810 - After reducing the fraction, the answer is 679/405
- In mixed form: 1274/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/30-20/81 54/60-10/81 54/30-30/81 54/90-10/81 54/30-50/81 54/30-70/81