Add 70/12 and 30/18
1st number: 5 10/12, 2nd number: 1 12/18
70/12 + 30/18 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 12 × 3 = 36,
70/12 = 70 × 3/12 × 3 = 210/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
30/18 = 30 × 2/18 × 2 = 60/36 - Add the two like fractions:
210/36 + 60/36 = 210 + 60/36 = 270/36 - 270/36 simplified gives 15/2
- So, 70/12 + 30/18 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/12+60/18 70/24+30/18 70/12+30/36 70/12+90/18 70/36+30/18 70/12+30/54 70/60+30/18 70/12+30/90 70/84+30/18