Answers

Add 28/70 and 54/45

1^st number: 28/70, 2^nd number: 1 9/45

28/70 + 54/45 is 8/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 45 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 70 × 9 = 630,
   28/70 = 28 × 9/70 × 9 = 252/630
3. Likewise, for the 2nd fraction, since 45 × 14 = 630,
   54/45 = 54 × 14/45 × 14 = 756/630
4. Add the two like fractions:
   252/630 + 756/630 = 252 + 756/630 = 1008/630
5. 1008/630 simplified gives 8/5
6. So, 28/70 + 54/45 = 8/5
   In mixed form: 13/5

MathStep (Works offline)

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

Related: ⁵⁶/₇₀+⁵⁴/₄₅ ²⁸/₇₀+⁵⁴/₉₀ ⁸⁴/₇₀+⁵⁴/₄₅

Add Fractions Calculator