Add 25/40 and 40/45
25/40 + 40/45 is 109/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 45 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 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Add the two like fractions:
225/360 + 320/360 = 225 + 320/360 = 545/360 - 545/360 simplified gives 109/72
- So, 25/40 + 40/45 = 109/72
In mixed form: 137/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/40+40/45 25/40+80/45 25/80+40/45 25/40+40/90 75/40+40/45