Answers

Add 45/9 and 40/84

1^st number: 5 0/9, 2^nd number: 40/84

45/9 + 40/84 is 115/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 84 is 252
   
   Next, find the equivalent fraction of both fractional numbers with denominator 252
2. For the 1st fraction, since 9 × 28 = 252,
   45/9 = 45 × 28/9 × 28 = 1260/252
3. Likewise, for the 2nd fraction, since 84 × 3 = 252,
   40/84 = 40 × 3/84 × 3 = 120/252
4. Add the two like fractions:
   1260/252 + 120/252 = 1260 + 120/252 = 1380/252
5. 1380/252 simplified gives 115/21
6. So, 45/9 + 40/84 = 115/21
   In mixed form: 510/21

MathStep (Works offline)

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

Related: ⁹⁰/₉+⁴⁰/₈₄ ⁴⁵/₉+⁸⁰/₈₄ ⁴⁵/₁₈+⁴⁰/₈₄ ⁴⁵/₂₇+⁴⁰/₈₄ ⁴⁵/₆₃+⁴⁰/₈₄

Add Fractions Calculator