Answers

Add 12/15 and 84/60

1^st number: 12/15, 2^nd number: 1 24/60

12/15 + 84/60 is 11/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 60 is 60
2. For the 1st fraction, since 15 × 4 = 60,
   12/15 = 12 × 4/15 × 4 = 48/60
3. Likewise, for the 2nd fraction, since 60 × 1 = 60,
   84/60 = 84 × 1/60 × 1 = 84/60
4. Add the two fractions:
   48/60 + 84/60 = 48 + 84/60 = 132/60
5. 132/60 simplified gives 11/5
6. So, 12/15 + 84/60 = 11/5
   In mixed form: 21/5

MathStep (Works offline)

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

Related: ²⁴/₁₅+⁸⁴/₆₀ ¹²/₃₀+⁸⁴/₆₀ ³⁶/₁₅+⁸⁴/₆₀ ¹²/₄₅+⁸⁴/₆₀ ⁶⁰/₁₅+⁸⁴/₆₀ ¹²/₇₅+⁸⁴/₆₀ ⁸⁴/₁₅+⁸⁴/₆₀

Add Fractions Calculator