Answers

Add 24/84 and 28/40

24/84 + 28/40 is 69/70.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 40 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 84 × 10 = 840,
   24/84 = 24 × 10/84 × 10 = 240/840
3. Likewise, for the 2nd fraction, since 40 × 21 = 840,
   28/40 = 28 × 21/40 × 21 = 588/840
4. Add the two like fractions:
   240/840 + 588/840 = 240 + 588/840 = 828/840
5. 828/840 simplified gives 69/70
6. So, 24/84 + 28/40 = 69/70

MathStep (Works offline)

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

Related: ⁴⁸/₈₄+²⁸/₄₀ ²⁴/₈₄+⁵⁶/₄₀ ²⁴/₈₄+²⁸/₈₀ ⁷²/₈₄+²⁸/₄₀ ²⁴/₈₄+⁸⁴/₄₀

Add Fractions Calculator