Add 72/40 and 80/27
1st number: 1 32/40, 2nd number: 2 26/27
72/40 + 80/27 is 643/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 27 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 27 × 40 = 1080,
80/27 = 80 × 40/27 × 40 = 3200/1080 - Add the two like fractions:
1944/1080 + 3200/1080 = 1944 + 3200/1080 = 5144/1080 - 5144/1080 simplified gives 643/135
- So, 72/40 + 80/27 = 643/135
In mixed form: 4103/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/80+80/27 72/40+80/54 72/40+80/81