Add 80/45 and 8/90
1st number: 1 35/45, 2nd number: 8/90
80/45 + 8/90 is 28/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
80/45 = 80 × 2/45 × 2 = 160/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
8/90 = 8 × 1/90 × 1 = 8/90 - Add the two like fractions:
160/90 + 8/90 = 160 + 8/90 = 168/90 - 168/90 simplified gives 28/15
- So, 80/45 + 8/90 = 28/15
In mixed form: 113/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/45+16/90 80/90+8/90 80/45+24/90 80/45+40/90 80/45+56/90