Answers

Add 4/56 and 42/81

4/56 + 42/81 is 223/378.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 81 is 4536
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4536
2. For the 1st fraction, since 56 × 81 = 4536,
   4/56 = 4 × 81/56 × 81 = 324/4536
3. Likewise, for the 2nd fraction, since 81 × 56 = 4536,
   42/81 = 42 × 56/81 × 56 = 2352/4536
4. Add the two like fractions:
   324/4536 + 2352/4536 = 324 + 2352/4536 = 2676/4536
5. 2676/4536 simplified gives 223/378
6. So, 4/56 + 42/81 = 223/378

MathStep (Works offline)

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

Related: ⁸/₅₆+⁴²/₈₁ ⁴/₅₆+⁸⁴/₈₁ ¹²/₅₆+⁴²/₈₁ ²⁰/₅₆+⁴²/₈₁ ²⁸/₅₆+⁴²/₈₁

Add Fractions Calculator