Add 25/40 and 40/18
1st number: 25/40, 2nd number: 2 4/18
25/40 + 40/18 is 205/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 18 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 40 × 9 = 360,
25/40 = 25 × 9/40 × 9 = 225/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
40/18 = 40 × 20/18 × 20 = 800/360 - Add the two like fractions:
225/360 + 800/360 = 225 + 800/360 = 1025/360 - 1025/360 simplified gives 205/72
- So, 25/40 + 40/18 = 205/72
In mixed form: 261/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+40/18 25/40+80/18 25/80+40/18 25/40+40/36 75/40+40/18 25/40+40/54 25/40+40/90