Add 20/72 and 12/16
20/72 + 12/16 is 37/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 16 is 144
Next, find the equivalent fraction of both fractional numbers with denominator 144 - For the 1st fraction, since 72 × 2 = 144,
20/72 = 20 × 2/72 × 2 = 40/144 - Likewise, for the 2nd fraction, since 16 × 9 = 144,
12/16 = 12 × 9/16 × 9 = 108/144 - Add the two like fractions:
40/144 + 108/144 = 40 + 108/144 = 148/144 - 148/144 simplified gives 37/36
- So, 20/72 + 12/16 = 37/36
In mixed form: 11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+12/16 20/72+24/16 20/72+12/32 60/72+12/16 20/72+36/16 20/72+12/48 20/72+60/16 20/72+12/80 20/72+84/16