Add 72/16 and 12/18
1st number: 4 8/16, 2nd number: 12/18
72/16 + 12/18 is 31/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 18 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 16 × 9 = 144,
72/16 = 72 × 9/16 × 9 = 648/144 - Likewise, for the 2nd fraction, since 18 × 8 = 144,
12/18 = 12 × 8/18 × 8 = 96/144 - Add the two like fractions:
648/144 + 96/144 = 648 + 96/144 = 744/144 - 744/144 simplified gives 31/6
- So, 72/16 + 12/18 = 31/6
In mixed form: 51/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/16+24/18 72/32+12/18 72/16+12/36 72/16+36/18 72/48+12/18 72/16+12/54 72/16+60/18 72/80+12/18 72/16+12/90 72/16+84/18