Answers

Add 40/84 and 80/45

1^st number: 40/84, 2^nd number: 1 35/45

40/84 + 80/45 is 142/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 45 is 1260
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1260
2. For the 1st fraction, since 84 × 15 = 1260,
   40/84 = 40 × 15/84 × 15 = 600/1260
3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
   80/45 = 80 × 28/45 × 28 = 2240/1260
4. Add the two like fractions:
   600/1260 + 2240/1260 = 600 + 2240/1260 = 2840/1260
5. 2840/1260 simplified gives 142/63
6. So, 40/84 + 80/45 = 142/63
   In mixed form: 216/63

MathStep (Works offline)

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

Related: ⁸⁰/₈₄+⁸⁰/₄₅ ⁴⁰/₈₄+⁸⁰/₉₀

Add Fractions Calculator