Answers

Add 18/84 and 42/8

1^st number: 18/84, 2^nd number: 5 2/8

18/84 + 42/8 is 153/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 8 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 84 × 2 = 168,
   18/84 = 18 × 2/84 × 2 = 36/168
3. Likewise, for the 2nd fraction, since 8 × 21 = 168,
   42/8 = 42 × 21/8 × 21 = 882/168
4. Add the two like fractions:
   36/168 + 882/168 = 36 + 882/168 = 918/168
5. 918/168 simplified gives 153/28
6. So, 18/84 + 42/8 = 153/28
   In mixed form: 513/28

MathStep (Works offline)

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

Related: ³⁶/₈₄+⁴²/₈ ¹⁸/₈₄+⁸⁴/₈ ¹⁸/₈₄+⁴²/₁₆ ⁵⁴/₈₄+⁴²/₈ ¹⁸/₈₄+⁴²/₂₄ ⁹⁰/₈₄+⁴²/₈ ¹⁸/₈₄+⁴²/₄₀ ¹⁸/₈₄+⁴²/₅₆

Add Fractions Calculator