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