Answers

Add 16/81 and 42/49

16/81 + 42/49 is 598/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 49 is 3969
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3969
2. For the 1st fraction, since 81 × 49 = 3969,
   16/81 = 16 × 49/81 × 49 = 784/3969
3. Likewise, for the 2nd fraction, since 49 × 81 = 3969,
   42/49 = 42 × 81/49 × 81 = 3402/3969
4. Add the two like fractions:
   784/3969 + 3402/3969 = 784 + 3402/3969 = 4186/3969
5. 4186/3969 simplified gives 598/567
6. So, 16/81 + 42/49 = 598/567
   In mixed form: 131/567

MathStep (Works offline)

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

Related: ³²/₈₁+⁴²/₄₉ ¹⁶/₈₁+⁸⁴/₄₉ ¹⁶/₈₁+⁴²/₉₈ ⁴⁸/₈₁+⁴²/₄₉ ⁸⁰/₈₁+⁴²/₄₉

Add Fractions Calculator