Answers

Add 30/90 and 56/42

1^st number: 30/90, 2^nd number: 1 14/42

30/90 + 56/42 is 5/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 90 and 42 is 630
   
   Next, find the equivalent fraction of both fractional numbers with denominator 630
2. For the 1st fraction, since 90 × 7 = 630,
   30/90 = 30 × 7/90 × 7 = 210/630
3. Likewise, for the 2nd fraction, since 42 × 15 = 630,
   56/42 = 56 × 15/42 × 15 = 840/630
4. Add the two like fractions:
   210/630 + 840/630 = 210 + 840/630 = 1050/630
5. 1050/630 simplified gives 5/3
6. So, 30/90 + 56/42 = 5/3
   In mixed form: 12/3

MathStep (Works offline)

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

Related: ⁶⁰/₉₀+⁵⁶/₄₂ ³⁰/₉₀+⁵⁶/₈₄

Add Fractions Calculator