Add 72/40 and 16/20
1st number: 1 32/40, 2nd number: 16/20
72/40 + 16/20 is 13/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 20 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
72/40 = 72 × 1/40 × 1 = 72/40 - Likewise, for the 2nd fraction, since 20 × 2 = 40,
16/20 = 16 × 2/20 × 2 = 32/40 - Add the two like fractions:
72/40 + 32/40 = 72 + 32/40 = 104/40 - 104/40 simplified gives 13/5
- So, 72/40 + 16/20 = 13/5
In mixed form: 23/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+32/20 72/80+16/20 72/40+16/40 72/40+48/20 72/40+16/60 72/40+80/20