Answers

Add 72/15 and 84/12

1^st number: 4 12/15, 2^nd number: 7 0/12

72/15 + 84/12 is 59/5.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 12 is 60
   
   Next, find the equivalent fraction of both fractional numbers with denominator 60
2. For the 1st fraction, since 15 × 4 = 60,
   72/15 = 72 × 4/15 × 4 = 288/60
3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
   84/12 = 84 × 5/12 × 5 = 420/60
4. Add the two like fractions:
   288/60 + 420/60 = 288 + 420/60 = 708/60
5. 708/60 simplified gives 59/5
6. So, 72/15 + 84/12 = 59/5
   In mixed form: 114/5

MathStep (Works offline)

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

Related: ⁷²/₃₀+⁸⁴/₁₂ ⁷²/₁₅+⁸⁴/₂₄ ⁷²/₄₅+⁸⁴/₁₂ ⁷²/₁₅+⁸⁴/₃₆ ⁷²/₇₅+⁸⁴/₁₂ ⁷²/₁₅+⁸⁴/₆₀

Add Fractions Calculator