Add 72/40 and 12/54
1st number: 1 32/40, 2nd number: 12/54
72/40 + 12/54 is 91/45.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 54 is 1080
Next, find the equivalent fraction of both fractional numbers with denominator 1080 - For the 1st fraction, since 40 × 27 = 1080,
72/40 = 72 × 27/40 × 27 = 1944/1080 - Likewise, for the 2nd fraction, since 54 × 20 = 1080,
12/54 = 12 × 20/54 × 20 = 240/1080 - Add the two like fractions:
1944/1080 + 240/1080 = 1944 + 240/1080 = 2184/1080 - 2184/1080 simplified gives 91/45
- So, 72/40 + 12/54 = 91/45
In mixed form: 21/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/40+24/54 72/80+12/54 72/40+36/54 72/40+60/54 72/40+84/54