Add 10/12 and 25/90
10/12 + 25/90 is 10/9.
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,
25/90 = 25 × 2/90 × 2 = 50/180 - Add the two like fractions:
150/180 + 50/180 = 150 + 50/180 = 200/180 - 200/180 simplified gives 10/9
- So, 10/12 + 25/90 = 10/9
In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/12+25/90 10/12+50/90 10/24+25/90 30/12+25/90 10/12+75/90 10/36+25/90 50/12+25/90 10/60+25/90 70/12+25/90 10/84+25/90