Add 84/15 and 30/63
1st number: 5 9/15, 2nd number: 30/63
84/15 + 30/63 is 638/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 63 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 15 × 21 = 315,
84/15 = 84 × 21/15 × 21 = 1764/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
30/63 = 30 × 5/63 × 5 = 150/315 - Add the two like fractions:
1764/315 + 150/315 = 1764 + 150/315 = 1914/315 - 1914/315 simplified gives 638/105
- So, 84/15 + 30/63 = 638/105
In mixed form: 68/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/15+60/63 84/30+30/63 84/15+90/63 84/45+30/63 84/75+30/63