Add 72/40 and 45/16
1st number: 1 32/40, 2nd number: 2 13/16
72/40 + 45/16 is 369/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
72/40 = 72 × 2/40 × 2 = 144/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
45/16 = 45 × 5/16 × 5 = 225/80 - Add the two like fractions:
144/80 + 225/80 = 144 + 225/80 = 369/80 - So, 72/40 + 45/16 = 369/80
In mixed form: 449/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+90/16 72/80+45/16 72/40+45/32 72/40+45/48 72/40+45/80