Answers

Add 72/9 and 45/42

1^st number: 8 0/9, 2^nd number: 1 3/42

72/9 + 45/42 is 127/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 9 × 14 = 126,
   72/9 = 72 × 14/9 × 14 = 1008/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   45/42 = 45 × 3/42 × 3 = 135/126
4. Add the two like fractions:
   1008/126 + 135/126 = 1008 + 135/126 = 1143/126
5. 1143/126 simplified gives 127/14
6. So, 72/9 + 45/42 = 127/14
   In mixed form: 91/14

MathStep (Works offline)

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

Related: ⁷²/₉+⁹⁰/₄₂ ⁷²/₁₈+⁴⁵/₄₂ ⁷²/₉+⁴⁵/₈₄ ⁷²/₂₇+⁴⁵/₄₂ ⁷²/₄₅+⁴⁵/₄₂ ⁷²/₆₃+⁴⁵/₄₂

Add Fractions Calculator