Answers

Add 72/42 and 54/84

1^st number: 1 30/42, 2^nd number: 54/84

72/42 + 54/84 is 33/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   72/42 = 72 × 2/42 × 2 = 144/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   54/84 = 54 × 1/84 × 1 = 54/84
4. Add the two like fractions:
   144/84 + 54/84 = 144 + 54/84 = 198/84
5. 198/84 simplified gives 33/14
6. So, 72/42 + 54/84 = 33/14
   In mixed form: 25/14

MathStep (Works offline)

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

Related: ⁷²/₈₄+⁵⁴/₈₄

Add Fractions Calculator