Answers

Add 30/84 and 6/42

30/84 + 6/42 is 1/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   30/84 = 30 × 1/84 × 1 = 30/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   6/42 = 6 × 2/42 × 2 = 12/84
4. Add the two like fractions:
   30/84 + 12/84 = 30 + 12/84 = 42/84
5. 42/84 simplified gives 1/2
6. So, 30/84 + 6/42 = 1/2

MathStep (Works offline)

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

Related: ⁶⁰/₈₄+⁶/₄₂ ³⁰/₈₄+¹²/₄₂ ³⁰/₈₄+⁶/₈₄ ⁹⁰/₈₄+⁶/₄₂ ³⁰/₈₄+¹⁸/₄₂ ³⁰/₈₄+³⁰/₄₂

Add Fractions Calculator