Add 45/40 and 2/18
1st number: 1 5/40, 2nd number: 2/18
45/40 + 2/18 is 89/72.
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,
45/40 = 45 × 9/40 × 9 = 405/360 - Likewise, for the 2nd fraction, since 18 × 20 = 360,
2/18 = 2 × 20/18 × 20 = 40/360 - Add the two like fractions:
405/360 + 40/360 = 405 + 40/360 = 445/360 - 445/360 simplified gives 89/72
- So, 45/40 + 2/18 = 89/72
In mixed form: 117/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+2/18 45/40+4/18 45/80+2/18 45/40+2/36 45/40+6/18 45/40+2/54 45/40+10/18 45/40+2/90 45/40+14/18