Add 20/72 and 3/30
20/72 + 3/30 is 17/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 30 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 72 × 5 = 360,
20/72 = 20 × 5/72 × 5 = 100/360 - Likewise, for the 2nd fraction, since 30 × 12 = 360,
3/30 = 3 × 12/30 × 12 = 36/360 - Add the two like fractions:
100/360 + 36/360 = 100 + 36/360 = 136/360 - 136/360 simplified gives 17/45
- So, 20/72 + 3/30 = 17/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/72+3/30 20/72+6/30 20/72+3/60 60/72+3/30 20/72+9/30 20/72+3/90 20/72+15/30 20/72+21/30