Add 7/4 and 84/15
1st number: 1 3/4, 2nd number: 5 9/15
7/4 + 84/15 is 147/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 4 × 15 = 60,
7/4 = 7 × 15/4 × 15 = 105/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
84/15 = 84 × 4/15 × 4 = 336/60 - Add the two like fractions:
105/60 + 336/60 = 105 + 336/60 = 441/60 - 441/60 simplified gives 147/20
- So, 7/4 + 84/15 = 147/20
In mixed form: 77/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/4+84/15 7/8+84/15 7/4+84/30 21/4+84/15 7/12+84/15 7/4+84/45 35/4+84/15 7/20+84/15 7/4+84/75 49/4+84/15 7/28+84/15