Add 12/72 and 12/20
12/72 + 12/20 is 23/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 20 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
12/72 = 12 × 5/72 × 5 = 60/360 - Likewise, for the 2nd fraction, since 20 × 18 = 360,
12/20 = 12 × 18/20 × 18 = 216/360 - Add the two like fractions:
60/360 + 216/360 = 60 + 216/360 = 276/360 - 276/360 simplified gives 23/30
- So, 12/72 + 12/20 = 23/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/72+12/20 12/72+24/20 12/72+12/40 36/72+12/20 12/72+36/20 12/72+12/60 60/72+12/20 12/72+60/20 84/72+12/20 12/72+84/20