Add 12/8 and 30/72
1st number: 1 4/8, 2nd number: 30/72
12/8 + 30/72 is 23/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
12/8 = 12 × 9/8 × 9 = 108/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
30/72 = 30 × 1/72 × 1 = 30/72 - Add the two like fractions:
108/72 + 30/72 = 108 + 30/72 = 138/72 - 138/72 simplified gives 23/12
- So, 12/8 + 30/72 = 23/12
In mixed form: 111/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/8+30/72 12/8+60/72 12/16+30/72 36/8+30/72 12/8+90/72 12/24+30/72 60/8+30/72 12/40+30/72 84/8+30/72 12/56+30/72