Add 30/84 and 72/63
1st number: 30/84, 2nd number: 1 9/63
30/84 + 72/63 is 3/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
30/84 = 30 × 3/84 × 3 = 90/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
72/63 = 72 × 4/63 × 4 = 288/252 - Add the two like fractions:
90/252 + 288/252 = 90 + 288/252 = 378/252 - 378/252 simplified gives 3/2
- So, 30/84 + 72/63 = 3/2
In mixed form: 11/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/84+72/63 90/84+72/63