Add 45/40 and 5/90
1st number: 1 5/40, 2nd number: 5/90
45/40 + 5/90 is 85/72.
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,
5/90 = 5 × 4/90 × 4 = 20/360 - Add the two like fractions:
405/360 + 20/360 = 405 + 20/360 = 425/360 - 425/360 simplified gives 85/72
- So, 45/40 + 5/90 = 85/72
In mixed form: 113/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+5/90 45/40+10/90 45/80+5/90 45/40+15/90 45/40+25/90 45/40+35/90