Add 40/50 and 81/30
1st number: 40/50, 2nd number: 2 21/30
40/50 + 81/30 is 7/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 50 and 30 is 150
Next, find the equivalent fraction of both fractional numbers with denominator 150 - For the 1st fraction, since 50 × 3 = 150,
40/50 = 40 × 3/50 × 3 = 120/150 - Likewise, for the 2nd fraction, since 30 × 5 = 150,
81/30 = 81 × 5/30 × 5 = 405/150 - Add the two like fractions:
120/150 + 405/150 = 120 + 405/150 = 525/150 - 525/150 simplified gives 7/2
- So, 40/50 + 81/30 = 7/2
In mixed form: 31/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/50+81/30 40/50+81/60 40/50+81/90