Add 10/12 and 12/90
10/12 + 12/90 is 29/30.
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,
10/12 = 10 × 15/12 × 15 = 150/180 - Likewise, for the 2nd fraction, since 90 × 2 = 180,
12/90 = 12 × 2/90 × 2 = 24/180 - Add the two like fractions:
150/180 + 24/180 = 150 + 24/180 = 174/180 - 174/180 simplified gives 29/30
- So, 10/12 + 12/90 = 29/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/12+12/90 10/12+24/90 10/24+12/90 30/12+12/90 10/12+36/90 10/36+12/90 50/12+12/90 10/12+60/90 10/60+12/90 70/12+12/90 10/12+84/90 10/84+12/90