Answers

Add 20/70 and 45/24

1^st number: 20/70, 2^nd number: 1 21/24

20/70 + 45/24 is 121/56.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 24 is 840
   
   Next, find the equivalent fraction of both fractional numbers with denominator 840
2. For the 1st fraction, since 70 × 12 = 840,
   20/70 = 20 × 12/70 × 12 = 240/840
3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
   45/24 = 45 × 35/24 × 35 = 1575/840
4. Add the two like fractions:
   240/840 + 1575/840 = 240 + 1575/840 = 1815/840
5. 1815/840 simplified gives 121/56
6. So, 20/70 + 45/24 = 121/56
   In mixed form: 29/56

MathStep (Works offline)

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

Related: ⁴⁰/₇₀+⁴⁵/₂₄ ²⁰/₇₀+⁹⁰/₂₄ ²⁰/₇₀+⁴⁵/₄₈ ⁶⁰/₇₀+⁴⁵/₂₄ ²⁰/₇₀+⁴⁵/₇₂

Add Fractions Calculator