Answers

Add 45/20 and 25/70

1^st number: 2 5/20, 2^nd number: 25/70

45/20 + 25/70 is 73/28.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 70 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   45/20 = 45 × 7/20 × 7 = 315/140
3. Likewise, for the 2nd fraction, since 70 × 2 = 140,
   25/70 = 25 × 2/70 × 2 = 50/140
4. Add the two like fractions:
   315/140 + 50/140 = 315 + 50/140 = 365/140
5. 365/140 simplified gives 73/28
6. So, 45/20 + 25/70 = 73/28
   In mixed form: 217/28

MathStep (Works offline)

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

Related: ⁹⁰/₂₀+²⁵/₇₀ ⁴⁵/₂₀+⁵⁰/₇₀ ⁴⁵/₄₀+²⁵/₇₀ ⁴⁵/₂₀+⁷⁵/₇₀ ⁴⁵/₆₀+²⁵/₇₀

Add Fractions Calculator