Subtract 5/81 from 30/14, Solve 2 2/14

Subtract 5/81 from 30/14

1^st number: 2 2/14, 2^nd number: 5/81

30/14 - 5/81 is 1180/567.

Find the least common denominator or LCM of the two denominators:
LCM of 14 and 81 is 1134

Next, find the equivalent fraction of both fractional numbers with denominator 1134
For the 1st fraction, since 14 × 81 = 1134,
30/14 = 30 × 81/14 × 81 = 2430/1134
Likewise, for the 2nd fraction, since 81 × 14 = 1134,
5/81 = 5 × 14/81 × 14 = 70/1134
Subtract the two like fractions:
2430/1134 - 70/1134 = 2430 - 70/1134 = 2360/1134
After reducing the fraction, the answer is 1180/567
In mixed form: 246/567

MathStep (Works offline)

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