Add 84/63 and 36/15
1st number: 1 21/63, 2nd number: 2 6/15
84/63 + 36/15 is 56/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 63 and 15 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Likewise, for the 2nd fraction, since 15 × 21 = 315,
36/15 = 36 × 21/15 × 21 = 756/315 - Add the two like fractions:
420/315 + 756/315 = 420 + 756/315 = 1176/315 - 1176/315 simplified gives 56/15
- So, 84/63 + 36/15 = 56/15
In mixed form: 311/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/63+72/15 84/63+36/30 84/63+36/45 84/63+36/75