Answers

Add 30/84 and 15/7

1^st number: 30/84, 2^nd number: 2 1/7

30/84 + 15/7 is 5/2.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 7 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   30/84 = 30 × 1/84 × 1 = 30/84
3. Likewise, for the 2nd fraction, since 7 × 12 = 84,
   15/7 = 15 × 12/7 × 12 = 180/84
4. Add the two like fractions:
   30/84 + 180/84 = 30 + 180/84 = 210/84
5. 210/84 simplified gives 5/2
6. So, 30/84 + 15/7 = 5/2
   In mixed form: 21/2

MathStep (Works offline)

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

Related: ⁶⁰/₈₄+¹⁵/₇ ³⁰/₈₄+³⁰/₇ ³⁰/₈₄+¹⁵/₁₄ ⁹⁰/₈₄+¹⁵/₇ ³⁰/₈₄+⁴⁵/₇ ³⁰/₈₄+¹⁵/₂₁ ³⁰/₈₄+⁷⁵/₇ ³⁰/₈₄+¹⁵/₃₅ ³⁰/₈₄+¹⁵/₄₉

Add Fractions Calculator