Add 45/15 and 84/63
1st number: 3 0/15, 2nd number: 1 21/63
45/15 + 84/63 is 13/3.
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,
45/15 = 45 × 21/15 × 21 = 945/315 - Likewise, for the 2nd fraction, since 63 × 5 = 315,
84/63 = 84 × 5/63 × 5 = 420/315 - Add the two like fractions:
945/315 + 420/315 = 945 + 420/315 = 1365/315 - 1365/315 simplified gives 13/3
- So, 45/15 + 84/63 = 13/3
In mixed form: 41/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/15+84/63 45/30+84/63 45/75+84/63