Answers

Add 42/8 and 45/84

1^st number: 5 2/8, 2^nd number: 45/84

42/8 + 45/84 is 81/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 84 is 168
   
   Next, find the equivalent fraction of both fractional numbers with denominator 168
2. For the 1st fraction, since 8 × 21 = 168,
   42/8 = 42 × 21/8 × 21 = 882/168
3. Likewise, for the 2nd fraction, since 84 × 2 = 168,
   45/84 = 45 × 2/84 × 2 = 90/168
4. Add the two like fractions:
   882/168 + 90/168 = 882 + 90/168 = 972/168
5. 972/168 simplified gives 81/14
6. So, 42/8 + 45/84 = 81/14
   In mixed form: 511/14

MathStep (Works offline)

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

Related: ⁸⁴/₈+⁴⁵/₈₄ ⁴²/₈+⁹⁰/₈₄ ⁴²/₁₆+⁴⁵/₈₄ ⁴²/₂₄+⁴⁵/₈₄ ⁴²/₄₀+⁴⁵/₈₄ ⁴²/₅₆+⁴⁵/₈₄

Add Fractions Calculator