Add 20/15 and 84/8
1st number: 1 5/15, 2nd number: 10 4/8
20/15 + 84/8 is 71/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 8 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
20/15 = 20 × 8/15 × 8 = 160/120 - Likewise, for the 2nd fraction, since 8 × 15 = 120,
84/8 = 84 × 15/8 × 15 = 1260/120 - Add the two like fractions:
160/120 + 1260/120 = 160 + 1260/120 = 1420/120 - 1420/120 simplified gives 71/6
- So, 20/15 + 84/8 = 71/6
In mixed form: 115/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+84/8 20/30+84/8 20/15+84/16 60/15+84/8 20/45+84/8 20/15+84/24 20/75+84/8 20/15+84/40 20/15+84/56