Add 84/24 and 54/15
1st number: 3 12/24, 2nd number: 3 9/15
84/24 + 54/15 is 71/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
84/24 = 84 × 5/24 × 5 = 420/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
54/15 = 54 × 8/15 × 8 = 432/120 - Add the two like fractions:
420/120 + 432/120 = 420 + 432/120 = 852/120 - 852/120 simplified gives 71/10
- So, 84/24 + 54/15 = 71/10
In mixed form: 71/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/48+54/15 84/24+54/30 84/72+54/15 84/24+54/45 84/24+54/75