Add 12/20 and 56/72
12/20 + 56/72 is 62/45.
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,
12/20 = 12 × 18/20 × 18 = 216/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
56/72 = 56 × 5/72 × 5 = 280/360 - Add the two like fractions:
216/360 + 280/360 = 216 + 280/360 = 496/360 - 496/360 simplified gives 62/45
- So, 12/20 + 56/72 = 62/45
In mixed form: 117/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20+56/72 12/40+56/72 36/20+56/72 12/60+56/72 60/20+56/72 84/20+56/72