Add 45/40 and 40/45
1st number: 1 5/40, 2nd number: 40/45
45/40 + 40/45 is 145/72.
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,
45/40 = 45 × 9/40 × 9 = 405/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
40/45 = 40 × 8/45 × 8 = 320/360 - Add the two like fractions:
405/360 + 320/360 = 405 + 320/360 = 725/360 - 725/360 simplified gives 145/72
- So, 45/40 + 40/45 = 145/72
In mixed form: 21/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+40/45 45/40+80/45 45/80+40/45 45/40+40/90