Subtract 9/81 from 56/2, Solve 28 0/2

Subtract 9/81 from 56/2

1^st number: 28 0/2, 2^nd number: 9/81

56/2 - 9/81 is 251/9.

Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162

Next, find the equivalent fraction of both fractional numbers with denominator 162
For the 1st fraction, since 2 × 81 = 162,
56/2 = 56 × 81/2 × 81 = 4536/162
Likewise, for the 2nd fraction, since 81 × 2 = 162,
9/81 = 9 × 2/81 × 2 = 18/162
Subtract the two like fractions:
4536/162 - 18/162 = 4536 - 18/162 = 4518/162
After reducing the fraction, the answer is 251/9
In mixed form: 278/9

MathStep (Works offline)

Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad