Add 9/30 and 9/72
9/30 + 9/72 is 17/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 30 × 12 = 360,
9/30 = 9 × 12/30 × 12 = 108/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
9/72 = 9 × 5/72 × 5 = 45/360 - Add the two like fractions:
108/360 + 45/360 = 108 + 45/360 = 153/360 - 153/360 simplified gives 17/40
- So, 9/30 + 9/72 = 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/30+9/72 9/30+18/72 9/60+9/72 27/30+9/72 9/30+27/72 9/90+9/72 45/30+9/72 9/30+45/72 63/30+9/72 9/30+63/72