Add 25/15 and 70/12
1st number: 1 10/15, 2nd number: 5 10/12
25/15 + 70/12 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
25/15 = 25 × 4/15 × 4 = 100/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
70/12 = 70 × 5/12 × 5 = 350/60 - Add the two like fractions:
100/60 + 350/60 = 100 + 350/60 = 450/60 - 450/60 simplified gives 15/2
- So, 25/15 + 70/12 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/15+70/12 25/30+70/12 25/15+70/24 75/15+70/12 25/45+70/12 25/15+70/36 25/75+70/12 25/15+70/60 25/15+70/84