Add 10/18 and 25/40
10/18 + 25/40 is 85/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 18 × 20 = 360,
10/18 = 10 × 20/18 × 20 = 200/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
25/40 = 25 × 9/40 × 9 = 225/360 - Add the two like fractions:
200/360 + 225/360 = 200 + 225/360 = 425/360 - 425/360 simplified gives 85/72
- So, 10/18 + 25/40 = 85/72
In mixed form: 113/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18+25/40 10/18+50/40 10/36+25/40 10/18+25/80 30/18+25/40 10/18+75/40 10/54+25/40 50/18+25/40 10/90+25/40 70/18+25/40