Answers

Add 6/84 and 90/70

1^st number: 6/84, 2^nd number: 1 20/70

6/84 + 90/70 is 19/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 70 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   6/84 = 6 × 5/84 × 5 = 30/420
3. Likewise, for the 2nd fraction, since 70 × 6 = 420,
   90/70 = 90 × 6/70 × 6 = 540/420
4. Add the two like fractions:
   30/420 + 540/420 = 30 + 540/420 = 570/420
5. 570/420 simplified gives 19/14
6. So, 6/84 + 90/70 = 19/14
   In mixed form: 15/14

MathStep (Works offline)

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

Related: ¹²/₈₄+⁹⁰/₇₀ ¹⁸/₈₄+⁹⁰/₇₀ ³⁰/₈₄+⁹⁰/₇₀ ⁴²/₈₄+⁹⁰/₇₀

Add Fractions Calculator