Add 15/2 and 25/90
1st number: 7 1/2, 2nd number: 25/90
15/2 + 25/90 is 70/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 2 × 45 = 90,
15/2 = 15 × 45/2 × 45 = 675/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
25/90 = 25 × 1/90 × 1 = 25/90 - Add the two like fractions:
675/90 + 25/90 = 675 + 25/90 = 700/90 - 700/90 simplified gives 70/9
- So, 15/2 + 25/90 = 70/9
In mixed form: 77/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/2+25/90 15/2+50/90 15/4+25/90 45/2+25/90 15/2+75/90 15/6+25/90 75/2+25/90 15/10+25/90 15/14+25/90