Answers

Add 20/70 and 45/7

1^st number: 20/70, 2^nd number: 6 3/7

20/70 + 45/7 is 47/7.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 7 is 70
   
   Next, find the equivalent fraction of both fractional numbers with denominator 70
2. For the 1st fraction, since 70 × 1 = 70,
   20/70 = 20 × 1/70 × 1 = 20/70
3. Likewise, for the 2nd fraction, since 7 × 10 = 70,
   45/7 = 45 × 10/7 × 10 = 450/70
4. Add the two like fractions:
   20/70 + 450/70 = 20 + 450/70 = 470/70
5. 470/70 simplified gives 47/7
6. So, 20/70 + 45/7 = 47/7
   In mixed form: 65/7

MathStep (Works offline)

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

Related: ⁴⁰/₇₀+⁴⁵/₇ ²⁰/₇₀+⁹⁰/₇ ²⁰/₇₀+⁴⁵/₁₄ ⁶⁰/₇₀+⁴⁵/₇ ²⁰/₇₀+⁴⁵/₂₁ ²⁰/₇₀+⁴⁵/₃₅ ²⁰/₇₀+⁴⁵/₄₉

Add Fractions Calculator