Add 80/45 and 9/40
1st number: 1 35/45, 2nd number: 9/40
80/45 + 9/40 is 721/360.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 40 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 45 × 8 = 360,
80/45 = 80 × 8/45 × 8 = 640/360 - Likewise, for the 2nd fraction, since 40 × 9 = 360,
9/40 = 9 × 9/40 × 9 = 81/360 - Add the two like fractions:
640/360 + 81/360 = 640 + 81/360 = 721/360 - So, 80/45 + 9/40 = 721/360
In mixed form: 21/360
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/45+18/40 80/90+9/40 80/45+9/80 80/45+27/40 80/45+45/40 80/45+63/40