Answers

Add 42/75 and 56/20

1^st number: 42/75, 2^nd number: 2 16/20

42/75 + 56/20 is 84/25.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 75 and 20 is 300
   
   Next, find the equivalent fraction of both fractional numbers with denominator 300
2. For the 1st fraction, since 75 × 4 = 300,
   42/75 = 42 × 4/75 × 4 = 168/300
3. Likewise, for the 2nd fraction, since 20 × 15 = 300,
   56/20 = 56 × 15/20 × 15 = 840/300
4. Add the two like fractions:
   168/300 + 840/300 = 168 + 840/300 = 1008/300
5. 1008/300 simplified gives 84/25
6. So, 42/75 + 56/20 = 84/25
   In mixed form: 39/25

MathStep (Works offline)

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

Related: ⁸⁴/₇₅+⁵⁶/₂₀ ⁴²/₇₅+⁵⁶/₄₀ ⁴²/₇₅+⁵⁶/₆₀

Add Fractions Calculator