Answers

Add 28/54 and 42/20

1^st number: 28/54, 2^nd number: 2 2/20

28/54 + 42/20 is 707/270.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 20 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   28/54 = 28 × 10/54 × 10 = 280/540
3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
   42/20 = 42 × 27/20 × 27 = 1134/540
4. Add the two like fractions:
   280/540 + 1134/540 = 280 + 1134/540 = 1414/540
5. 1414/540 simplified gives 707/270
6. So, 28/54 + 42/20 = 707/270
   In mixed form: 2167/270

MathStep (Works offline)

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

Related: ⁵⁶/₅₄+⁴²/₂₀ ²⁸/₅₄+⁸⁴/₂₀ ²⁸/₅₄+⁴²/₄₀ ⁸⁴/₅₄+⁴²/₂₀ ²⁸/₅₄+⁴²/₆₀

Add Fractions Calculator