Add 3/2 and 20/72
1st number: 1 1/2, 2nd number: 20/72
3/2 + 20/72 is 16/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 2 × 36 = 72,
3/2 = 3 × 36/2 × 36 = 108/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
20/72 = 20 × 1/72 × 1 = 20/72 - Add the two like fractions:
108/72 + 20/72 = 108 + 20/72 = 128/72 - 128/72 simplified gives 16/9
- So, 3/2 + 20/72 = 16/9
In mixed form: 17/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/2+20/72 3/2+40/72 3/4+20/72 9/2+20/72 3/2+60/72 3/6+20/72 15/2+20/72 3/10+20/72 21/2+20/72 3/14+20/72