Add 45/40 and 20/5
1st number: 1 5/40, 2nd number: 4 0/5
45/40 + 20/5 is 41/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 5 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
45/40 = 45 × 1/40 × 1 = 45/40 - Likewise, for the 2nd fraction, since 5 × 8 = 40,
20/5 = 20 × 8/5 × 8 = 160/40 - Add the two like fractions:
45/40 + 160/40 = 45 + 160/40 = 205/40 - 205/40 simplified gives 41/8
- So, 45/40 + 20/5 = 41/8
In mixed form: 51/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/40+20/5 45/40+40/5 45/80+20/5 45/40+20/10 45/40+60/5 45/40+20/15 45/40+20/25 45/40+20/35