Add 30/18 and 10/72
1st number: 1 12/18, 2nd number: 10/72
30/18 + 10/72 is 65/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
30/18 = 30 × 4/18 × 4 = 120/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
10/72 = 10 × 1/72 × 1 = 10/72 - Add the two like fractions:
120/72 + 10/72 = 120 + 10/72 = 130/72 - 130/72 simplified gives 65/36
- So, 30/18 + 10/72 = 65/36
In mixed form: 129/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 60/18+10/72 30/18+20/72 30/36+10/72 90/18+10/72 30/18+30/72 30/54+10/72 30/18+50/72 30/90+10/72 30/18+70/72