Add 30/50 and 18/72
30/50 + 18/72 is 17/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 72 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 50 × 36 = 1800,
30/50 = 30 × 36/50 × 36 = 1080/1800 - Likewise, for the 2nd fraction, since 72 × 25 = 1800,
18/72 = 18 × 25/72 × 25 = 450/1800 - Add the two like fractions:
1080/1800 + 450/1800 = 1080 + 450/1800 = 1530/1800 - 1530/1800 simplified gives 17/20
- So, 30/50 + 18/72 = 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/50+18/72 30/50+36/72 90/50+18/72 30/50+54/72 30/50+90/72