Answers

Add 49/70 and 20/42

49/70 + 20/42 is 247/210.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 42 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   49/70 = 49 × 3/70 × 3 = 147/210
3. Likewise, for the 2nd fraction, since 42 × 5 = 210,
   20/42 = 20 × 5/42 × 5 = 100/210
4. Add the two like fractions:
   147/210 + 100/210 = 147 + 100/210 = 247/210
5. So, 49/70 + 20/42 = 247/210
   In mixed form: 137/210

MathStep (Works offline)

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

Related: ⁹⁸/₇₀+²⁰/₄₂ ⁴⁹/₇₀+⁴⁰/₄₂ ⁴⁹/₇₀+²⁰/₈₄ ⁴⁹/₇₀+⁶⁰/₄₂

Add Fractions Calculator