Add 80/40 and 5/45
1st number: 2 0/40, 2nd number: 5/45
80/40 + 5/45 is 19/9.
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,
80/40 = 80 × 9/40 × 9 = 720/360 - Likewise, for the 2nd fraction, since 45 × 8 = 360,
5/45 = 5 × 8/45 × 8 = 40/360 - Add the two like fractions:
720/360 + 40/360 = 720 + 40/360 = 760/360 - 760/360 simplified gives 19/9
- So, 80/40 + 5/45 = 19/9
In mixed form: 21/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/40+10/45 80/40+5/90 80/40+15/45 80/40+25/45 80/40+35/45