Add 81/21 and 10/96, Solve 3 18/21 + 10/96 as a fraction

Add 81/21 and 10/96

1^st number: 3 18/21, 2^nd number: 10/96

81/21 + 10/96 is 1331/336.

Find the least common denominator or LCM of the two denominators:
LCM of 21 and 96 is 672

Next, find the equivalent fraction of both fractional numbers with denominator 672
For the 1st fraction, since 21 × 32 = 672,
81/21 = 81 × 32/21 × 32 = 2592/672
Likewise, for the 2nd fraction, since 96 × 7 = 672,
10/96 = 10 × 7/96 × 7 = 70/672
Add the two like fractions:
2592/672 + 70/672 = 2592 + 70/672 = 2662/672
2662/672 simplified gives 1331/336
So, 81/21 + 10/96 = 1331/336
In mixed form: 3323/336

MathStep (Works offline)

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