Add 12/30 and 7/18
12/30 + 7/18 is 71/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 30 × 3 = 90,
12/30 = 12 × 3/30 × 3 = 36/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
7/18 = 7 × 5/18 × 5 = 35/90 - Add the two like fractions:
36/90 + 35/90 = 36 + 35/90 = 71/90 - So, 12/30 + 7/18 = 71/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/30+7/18 12/30+14/18 12/60+7/18 12/30+7/36 36/30+7/18 12/30+21/18 12/90+7/18 12/30+7/54 60/30+7/18 12/30+35/18 12/30+7/90 84/30+7/18 12/30+49/18