Answers

Add 15/30 and 75/70

1^st number: 15/30, 2^nd number: 1 5/70

15/30 + 75/70 is 11/7.

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,
   15/30 = 15 × 7/30 × 7 = 105/210
3. Likewise, for the 2nd fraction, since 70 × 3 = 210,
   75/70 = 75 × 3/70 × 3 = 225/210
4. Add the two like fractions:
   105/210 + 225/210 = 105 + 225/210 = 330/210
5. 330/210 simplified gives 11/7
6. So, 15/30 + 75/70 = 11/7
   In mixed form: 14/7

MathStep (Works offline)

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

Related: ¹⁵/₆₀+⁷⁵/₇₀ ⁴⁵/₃₀+⁷⁵/₇₀ ¹⁵/₉₀+⁷⁵/₇₀ ⁷⁵/₃₀+⁷⁵/₇₀

Add Fractions Calculator