Add 2/12 and 70/90
2/12 + 70/90 is 17/18.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 90 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 12 × 15 = 180,
2/12 = 2 × 15/12 × 15 = 30/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
70/90 = 70 × 2/90 × 2 = 140/180 - Add the two like fractions:
30/180 + 140/180 = 30 + 140/180 = 170/180 - 170/180 simplified gives 17/18
- So, 2/12 + 70/90 = 17/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/12+70/90 2/24+70/90 6/12+70/90 2/36+70/90 10/12+70/90 2/60+70/90 14/12+70/90 2/84+70/90