Add 30/2 and 72/12
1st number: 15 0/2, 2nd number: 6 0/12
30/2 + 72/12 is 21/1.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 12 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 2 × 6 = 12,
30/2 = 30 × 6/2 × 6 = 180/12 - Likewise, for the 2nd fraction, since 12 × 1 = 12,
72/12 = 72 × 1/12 × 1 = 72/12 - Add the two like fractions:
180/12 + 72/12 = 180 + 72/12 = 252/12 - 252/12 simplified gives 21/1
- So, 30/2 + 72/12 = 21/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/2+72/12 30/4+72/12 30/2+72/24 90/2+72/12 30/6+72/12 30/2+72/36 30/10+72/12 30/2+72/60 30/14+72/12 30/2+72/84