Add 32/20 and 20/72
1st number: 1 12/20, 2nd number: 20/72
32/20 + 20/72 is 169/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 20 × 18 = 360,
32/20 = 32 × 18/20 × 18 = 576/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Add the two like fractions:
576/360 + 100/360 = 576 + 100/360 = 676/360 - 676/360 simplified gives 169/90
- So, 32/20 + 20/72 = 169/90
In mixed form: 179/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 64/20+20/72 32/20+40/72 32/40+20/72 96/20+20/72 32/20+60/72 32/60+20/72