Answers

Add 5/84 and 90/30

1^st number: 5/84, 2^nd number: 3 0/30

5/84 + 90/30 is 257/84.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 30 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   5/84 = 5 × 5/84 × 5 = 25/420
3. Likewise, for the 2nd fraction, since 30 × 14 = 420,
   90/30 = 90 × 14/30 × 14 = 1260/420
4. Add the two like fractions:
   25/420 + 1260/420 = 25 + 1260/420 = 1285/420
5. 1285/420 simplified gives 257/84
6. So, 5/84 + 90/30 = 257/84
   In mixed form: 35/84

MathStep (Works offline)

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

Related: ¹⁰/₈₄+⁹⁰/₃₀ ⁵/₈₄+⁹⁰/₆₀ ¹⁵/₈₄+⁹⁰/₃₀ ²⁵/₈₄+⁹⁰/₃₀ ³⁵/₈₄+⁹⁰/₃₀

Add Fractions Calculator