Add 45/40 and 45/90
1st number: 1 5/40, 2nd number: 45/90
45/40 + 45/90 is 13/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 90 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 90 × 4 = 360,
45/90 = 45 × 4/90 × 4 = 180/360 - Add the two like fractions:
405/360 + 180/360 = 405 + 180/360 = 585/360 - 585/360 simplified gives 13/8
- So, 45/40 + 45/90 = 13/8
In mixed form: 15/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+45/90 45/80+45/90