Answers

Add 84/30 and 28/72

1^st number: 2 24/30, 2^nd number: 28/72

84/30 + 28/72 is 287/90.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 72 is 360
   
   Next, find the equivalent fraction of both fractional numbers with denominator 360
2. For the 1st fraction, since 30 × 12 = 360,
   84/30 = 84 × 12/30 × 12 = 1008/360
3. Likewise, for the 2nd fraction, since 72 × 5 = 360,
   28/72 = 28 × 5/72 × 5 = 140/360
4. Add the two like fractions:
   1008/360 + 140/360 = 1008 + 140/360 = 1148/360
5. 1148/360 simplified gives 287/90
6. So, 84/30 + 28/72 = 287/90
   In mixed form: 317/90

MathStep (Works offline)

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

Related: ⁸⁴/₃₀+⁵⁶/₇₂ ⁸⁴/₆₀+²⁸/₇₂ ⁸⁴/₃₀+⁸⁴/₇₂ ⁸⁴/₉₀+²⁸/₇₂

Add Fractions Calculator