Answers

Add 80/30 and 30/70

1^st number: 2 20/30, 2^nd number: 30/70

80/30 + 30/70 is 65/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 70 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 30 × 7 = 210,
   80/30 = 80 × 7/30 × 7 = 560/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   30/70 = 30 × 3/70 × 3 = 90/210
4. Add the two like fractions:
   560/210 + 90/210 = 560 + 90/210 = 650/210
5. 650/210 simplified gives 65/21
6. So, 80/30 + 30/70 = 65/21
   In mixed form: 32/21

MathStep (Works offline)

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

Related: ⁸⁰/₃₀+⁶⁰/₇₀ ⁸⁰/₆₀+³⁰/₇₀ ⁸⁰/₃₀+⁹⁰/₇₀ ⁸⁰/₉₀+³⁰/₇₀

Add Fractions Calculator