Add 7/15 and 84/40
1st number: 7/15, 2nd number: 2 4/40
7/15 + 84/40 is 77/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 15 × 8 = 120,
7/15 = 7 × 8/15 × 8 = 56/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
84/40 = 84 × 3/40 × 3 = 252/120 - Add the two like fractions:
56/120 + 252/120 = 56 + 252/120 = 308/120 - 308/120 simplified gives 77/30
- So, 7/15 + 84/40 = 77/30
In mixed form: 217/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/15+84/40 7/30+84/40 7/15+84/80 21/15+84/40 7/45+84/40 35/15+84/40 7/75+84/40 49/15+84/40