Add 16/42 and 81/24, Solve 16/42 + 3 9/24 as a fraction

Add 16/42 and 81/24

1^st number: 16/42, 2^nd number: 3 9/24

16/42 + 81/24 is 631/168.

Find the least common denominator or LCM of the two denominators:
LCM of 42 and 24 is 168

Next, find the equivalent fraction of both fractional numbers with denominator 168
For the 1st fraction, since 42 × 4 = 168,
16/42 = 16 × 4/42 × 4 = 64/168
Likewise, for the 2nd fraction, since 24 × 7 = 168,
81/24 = 81 × 7/24 × 7 = 567/168
Add the two like fractions:
64/168 + 567/168 = 64 + 567/168 = 631/168
So, 16/42 + 81/24 = 631/168
In mixed form: 3127/168

MathStep (Works offline)

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