Answers

Add 10/70 and 80/15

1^st number: 10/70, 2^nd number: 5 5/15

10/70 + 80/15 is 115/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 15 is 210
   
   Next, find the equivalent fraction of both fractional numbers with denominator 210
2. For the 1st fraction, since 70 × 3 = 210,
   10/70 = 10 × 3/70 × 3 = 30/210
3. Likewise, for the 2nd fraction, since 15 × 14 = 210,
   80/15 = 80 × 14/15 × 14 = 1120/210
4. Add the two like fractions:
   30/210 + 1120/210 = 30 + 1120/210 = 1150/210
5. 1150/210 simplified gives 115/21
6. So, 10/70 + 80/15 = 115/21
   In mixed form: 510/21

MathStep (Works offline)

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

Related: ²⁰/₇₀+⁸⁰/₁₅ ¹⁰/₇₀+⁸⁰/₃₀ ³⁰/₇₀+⁸⁰/₁₅ ¹⁰/₇₀+⁸⁰/₄₅ ⁵⁰/₇₀+⁸⁰/₁₅ ¹⁰/₇₀+⁸⁰/₇₅

Add Fractions Calculator