Add 40/54 and 72/20
1st number: 40/54, 2nd number: 3 12/20
40/54 + 72/20 is 586/135.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 20 is 540
Next, find the equivalent fraction of both fractional numbers with denominator 540 - For the 1st fraction, since 54 × 10 = 540,
40/54 = 40 × 10/54 × 10 = 400/540 - Likewise, for the 2nd fraction, since 20 × 27 = 540,
72/20 = 72 × 27/20 × 27 = 1944/540 - Add the two like fractions:
400/540 + 1944/540 = 400 + 1944/540 = 2344/540 - 2344/540 simplified gives 586/135
- So, 40/54 + 72/20 = 586/135
In mixed form: 446/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/54+72/20 40/54+72/40 40/54+72/60