Add 81/54 and 10/84, Solve 1 27/54 + 10/84 as a fraction

Add 81/54 and 10/84

1^st number: 1 27/54, 2^nd number: 10/84

81/54 + 10/84 is 34/21.

Find the least common denominator or LCM of the two denominators:
LCM of 54 and 84 is 756

Next, find the equivalent fraction of both fractional numbers with denominator 756
For the 1st fraction, since 54 × 14 = 756,
81/54 = 81 × 14/54 × 14 = 1134/756
Likewise, for the 2nd fraction, since 84 × 9 = 756,
10/84 = 10 × 9/84 × 9 = 90/756
Add the two like fractions:
1134/756 + 90/756 = 1134 + 90/756 = 1224/756
1224/756 simplified gives 34/21
So, 81/54 + 10/84 = 34/21
In mixed form: 113/21

MathStep (Works offline)

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