Add 25/18 and 70/90
1st number: 1 7/18, 2nd number: 70/90
25/18 + 70/90 is 13/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
25/18 = 25 × 5/18 × 5 = 125/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
70/90 = 70 × 1/90 × 1 = 70/90 - Add the two like fractions:
125/90 + 70/90 = 125 + 70/90 = 195/90 - 195/90 simplified gives 13/6
- So, 25/18 + 70/90 = 13/6
In mixed form: 21/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/18+70/90 25/36+70/90 75/18+70/90 25/54+70/90 25/90+70/90