Add 30/15 and 40/72
1st number: 2 0/15, 2nd number: 40/72
30/15 + 40/72 is 23/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 15 × 24 = 360,
30/15 = 30 × 24/15 × 24 = 720/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
40/72 = 40 × 5/72 × 5 = 200/360 - Add the two like fractions:
720/360 + 200/360 = 720 + 200/360 = 920/360 - 920/360 simplified gives 23/9
- So, 30/15 + 40/72 = 23/9
In mixed form: 25/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/15+40/72 30/15+80/72 90/15+40/72 30/45+40/72 30/75+40/72