Add 84/3 and 72/63
1st number: 28 0/3, 2nd number: 1 9/63
84/3 + 72/63 is 204/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 3 × 21 = 63,
84/3 = 84 × 21/3 × 21 = 1764/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
72/63 = 72 × 1/63 × 1 = 72/63 - Add the two like fractions:
1764/63 + 72/63 = 1764 + 72/63 = 1836/63 - 1836/63 simplified gives 204/7
- So, 84/3 + 72/63 = 204/7
In mixed form: 291/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/6+72/63 84/9+72/63 84/15+72/63 84/21+72/63