Answers

Add 24/42 and 84/80

1^st number: 24/42, 2^nd number: 1 4/80

24/42 + 84/80 is 227/140.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 80 is 1680
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1680
2. For the 1st fraction, since 42 × 40 = 1680,
   24/42 = 24 × 40/42 × 40 = 960/1680
3. Likewise, for the 2nd fraction, since 80 × 21 = 1680,
   84/80 = 84 × 21/80 × 21 = 1764/1680
4. Add the two like fractions:
   960/1680 + 1764/1680 = 960 + 1764/1680 = 2724/1680
5. 2724/1680 simplified gives 227/140
6. So, 24/42 + 84/80 = 227/140
   In mixed form: 187/140

MathStep (Works offline)

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

Related: ⁴⁸/₄₂+⁸⁴/₈₀ ²⁴/₈₄+⁸⁴/₈₀ ⁷²/₄₂+⁸⁴/₈₀

Add Fractions Calculator